Remove references to Lightbend where possible

[mkurz]

grep:

play-java-hello-world-tutorial/app/views/tutorial.scala.html:        <li><a href="https://developer.lightbend.com/start/?group=play" target="_blank">Play Example Apps</a>,
play-java-hello-world-tutorial/app/views/tutorial.scala.html:        <li>Podcast: <a href="https://www.lightbend.com/blog/why-is-play-framework-so-fast"
play-java-hello-world-tutorial/README.md:* sbt 1.9.6 or higher. Note: if you downloaded this project as a zip file from https://developer.lightbend.com, the file includes an sbt distribution for your convenience.
play-scala-hello-world-tutorial/app/views/tutorial.scala.html:        <li><a href="https://developer.lightbend.com/start/?group=play" target="_blank">Play Example Apps</a>,
play-scala-hello-world-tutorial/app/views/tutorial.scala.html:        <li>Podcast: <a href="https://www.lightbend.com/blog/why-is-play-framework-so-fast"
play-scala-hello-world-tutorial/README.md:* sbt 1.9.6 or higher. Note: if you downloaded this project as a zip file from https://developer.lightbend.com, the file includes an sbt distribution for your convenience.
play-java-grpc-example/build.sbt:  "com.lightbend.play"      %% "play-grpc-runtime"    % BuildInfo.playGrpcVersion,
play-java-grpc-example/build.sbt:  "com.lightbend.play" %% "play-grpc-testkit" % BuildInfo.playGrpcVersion % Test
play-java-grpc-example/README.md:This example is described in the [Play Java gRPC Example site](https://developer.lightbend.com/guides/play-java-grpc-example/).
play-java-grpc-example/README.md:For detailed documentation refer to https://www.playframework.com/documentation/latest/Home and https://developer.lightbend.com/docs/akka-grpc/current/ .
play-java-grpc-example/docs/src/main/paradox/index.md:[Akka gRPC](https://developer.lightbend.com/docs/akka-grpc/current/overview.html) is a toolkit for building streaming
play-java-grpc-example/docs/src/main/paradox/index.md:For detailed documentation refer to https://www.playframework.com/documentation/latest/Home and https://developer.lightbend.com/docs/akka-grpc/current/.
play-java-grpc-example/docs/src/main/paradox/index.md:kickstart your Play gRPC project on [Lightbend's Tech Hub](https://developer.lightbend.com/start/?group=play&project=play-java-grpc-example).
play-java-grpc-example/docs/src/main/paradox/code-details.md:You can read more about [Service gRPC from a Play App](https://developer.lightbend.com/docs/play-grpc/current/play/serving-grpc.html) in the docs.
play-java-grpc-example/docs/src/main/paradox/code-details.md:[using Pekko Discovery for endpoint discovery](https://developer.lightbend.com/docs/akka-grpc/current/client/configuration.html#using-akka-discovery-for-endpoint-discovery) for more details.
play-java-grpc-example/project/plugins.sbt:addSbtPlugin("com.lightbend.paradox" % "sbt-paradox" % "0.10.5")
play-java-grpc-example/project/plugins.sbt:addSbtPlugin("com.lightbend.akka.grpc" %% "sbt-akka-grpc" % "1.0.2")
play-java-grpc-example/project/plugins.sbt:libraryDependencies += "com.lightbend.play" %% "play-grpc-generators" % playGrpcV
play-java-grpc-example/conf/application.conf:## overrides (https://github.com/lightbend/config#optional-system-or-env-variable-overrides)
play-scala-grpc-example/build.sbt:  "com.lightbend.play"      %% "play-grpc-runtime"    % BuildInfo.playGrpcVersion,
play-scala-grpc-example/build.sbt:  "com.lightbend.play"      %% "play-grpc-scalatest" % BuildInfo.playGrpcVersion % Test, 
play-scala-grpc-example/build.sbt:  "com.lightbend.play"      %% "play-grpc-specs2"    % BuildInfo.playGrpcVersion % Test, 
play-scala-grpc-example/README.md:This example is described in the [Play Scala gRPC Example site](https://developer.lightbend.com/guides/play-scala-grpc-example/).
play-scala-grpc-example/README.md:For detailed documentation refer to https://www.playframework.com/documentation/latest/Home and https://developer.lightbend.com/docs/akka-grpc/current/ .
play-scala-grpc-example/docs/src/main/paradox/index.md:[Akka gRPC](https://developer.lightbend.com/docs/akka-grpc/current/overview.html) is a toolkit for building streaming
play-scala-grpc-example/docs/src/main/paradox/index.md:For detailed documentation refer to https://www.playframework.com/documentation/latest/Home and https://developer.lightbend.com/docs/akka-grpc/current/.
play-scala-grpc-example/docs/src/main/paradox/index.md:kickstart your Play gRPC project on [Lightbend's Tech Hub](https://developer.lightbend.com/start/?group=play&project=play-scala-grpc-example).
play-scala-grpc-example/docs/src/main/paradox/code-details.md:You can read more about [Service gRPC from a Play App](https://developer.lightbend.com/docs/play-grpc/current/play/serving-grpc.html) in the docs.
play-scala-grpc-example/docs/src/main/paradox/code-details.md:[using Pekko Discovery for endpoint discovery](https://developer.lightbend.com/docs/akka-grpc/current/client/configuration.html#using-akka-discovery-for-endpoint-discovery) for more details.
play-scala-grpc-example/project/plugins.sbt:addSbtPlugin("com.lightbend.paradox" % "sbt-paradox" % "0.10.5")
play-scala-grpc-example/project/plugins.sbt:addSbtPlugin("com.lightbend.akka.grpc" %% "sbt-akka-grpc" % "1.0.2")
play-scala-grpc-example/project/plugins.sbt:libraryDependencies += "com.lightbend.play" %% "play-grpc-generators" % playGrpcV
play-scala-grpc-example/conf/application.conf:## overrides (https://github.com/lightbend/config#optional-system-or-env-variable-overrides)
play-scala-rest-api-example/build.sbt:    paradoxProperties += ("download_url" -> "https://example.lightbend.com/v1/download/play-samples-play-scala-rest-api-example")
play-scala-rest-api-example/README.md:This is the example project for [Making a REST API in Play](http://developer.lightbend.com/guides/play-rest-api/index.html).
play-scala-rest-api-example/docs/src/main/paradox/index.md:## From Lightbend Tech Hub
play-scala-rest-api-example/docs/src/main/paradox/index.md:Download a pre-packaged bundle with this link: <https://example.lightbend.com/v1/download/play-samples-play-scala-rest-api-example>.
play-scala-rest-api-example/docs/src/main/paradox/index.md:The fun answer is that [Play is **fast**](https://www.lightbend.com/blog/why-is-play-framework-so-fast).
play-scala-rest-api-example/docs/src/main/paradox/index.md:In fact, Play is so fast that you have to turn off machines so that the rest of your architecture can keep up.  The Hootsuite team was able to **reduce the number of servers by 80%** by [switching to Play](https://www.lightbend.com/resources/case-studies-and-stories/how-hootsuite-modernized-its-url-shortener).  if you deploy Play with the same infrastructure that you were using for other web frameworks, you are effectively staging a denial of service attack against your own database.
play-scala-rest-api-example/docs/src/main/paradox/index.md:Play provides an easy to use MVC paradigm, including hot-reloading without any JVM bytecode magic or container overhead.  Startup time for a developer on Play was **reduced by roughly 7 times** for [Walmart Canada](https://www.lightbend.com/resources/case-studies-and-stories/walmart-boosts-conversions-by-20-with-lightbend-reactive-platform), and using Play **reduced development times by 2x to 3x**.
play-scala-rest-api-example/project/plugins.sbt:addSbtPlugin("com.lightbend.paradox" % "sbt-paradox" % "0.10.5")

[ihostage]

Hi, Matthias!
WDYT about play-[scala|java]-telemetry-example's?
These samples don't check on CI and I don't know how we can support these examples without permissions for https://repo.lightbend.com/commercial-releases 🤷‍♂️
For example right now I can't add and check Gradle support for these samples 😞

[mkurz]

WDYT about play-[scala|java]-telemetry-example's?

I kept them for now because I thought it does not hurt and maybe they are useful for someone, but I removed them now because it seems telemetry dropped Play support (or at least it's not in the docs anymore) see:

• [3.0.x] Remove telemetry examples #481
• [2.9.x] Remove telemetry examples #482