refactor: cleanup plugins

Author: QuadStingray

project/plugins.sbt

@@ -19,20 +19,10 @@ addSbtPlugin("com.jsuereth" % "sbt-pgp" % "2.1.1")
 
 addSbtPlugin("com.github.gseitz" % "sbt-release" % "1.0.13")
 
-// paradox
-addSbtPlugin("com.lightbend.paradox" % "sbt-paradox" % "0.10.3")
-
-addSbtPlugin("io.github.jonas" % "sbt-paradox-material-theme" % "0.6.0")
-
-addSbtPlugin("com.typesafe.sbt" % "sbt-site" % "1.4.1")
-
-addSbtPlugin("com.typesafe.sbt" % "sbt-ghpages" % "0.6.3")
-
 addSbtPlugin("dev.quadstingray" %% "sbt-json" % "0.6.3")
 
 addDependencyTreePlugin
 
 // todo remove as soon as possible
 dependencyOverrides += "org.scala-lang.modules" %% "scala-xml" % "1.2.0"
 
-dependencyOverrides += "io.circe" %% "circe-core" % "0.9.3" // wird wegen sbt-paradox-material-theme benoetingt. Lange nicht geupdated und daher sehr alte circe version