Remove sbt-header plugin

sbt-header plugin requires Java 1.7+.

build.sbt

@@ -1,32 +1,7 @@
 import Dependencies._
-import de.heikoseeberger.sbtheader.HeaderPattern
 
 val g8version = "0.7.3-SNAPSHOT"
 
-lazy val headerSettings = headers := Map(
-    "scala" -> (
-      HeaderPattern.cStyleBlockComment,
-      """|/*
-         | * Original implementation (C) 2010-2015 Nathan Hamblen and contributors
-         | * Adapted and extended in 2016 by foundweekends project
-         | *
-         | * Licensed under the Apache License, Version 2.0 (the "License");
-         | * you may not use this file except in compliance with the License.
-         | * You may obtain a copy of the License at
-         | *
-         | * http://www.apache.org/licenses/LICENSE-2.0
-         | *
-         | * Unless required by applicable law or agreed to in writing, software
-         | * distributed under the License is distributed on an "AS IS" BASIS,
-         | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-         | * See the License for the specific language governing permissions and
-         | * limitations under the License.
-         | */
-         |
-         |""".stripMargin
-    )
-)
-
 // posterous title needs to be giter8, so both app and root are named giter8
 lazy val root = (project in file(".")).
   enablePlugins(TravisSitePlugin, NoPublish).
@@ -62,7 +37,6 @@ lazy val root = (project in file(".")).
 
 lazy val app = (project in file("app")).
   disablePlugins(BintrayPlugin).
-  enablePlugins(AutomateHeaderPlugin).
   enablePlugins(ConscriptPlugin, BuildInfoPlugin, SonatypePublish).
   dependsOn(lib).
   settings(
@@ -72,13 +46,11 @@ lazy val app = (project in file("app")).
     sourceDirectory in csRun := { (baseDirectory).value.getParentFile / "src" / "main" / "conscript" },
     libraryDependencies ++= Seq(scopt, logback),
     buildInfoKeys := Seq(name, version, scalaVersion, sbtVersion),
-    buildInfoPackage := "giter8",
-    headerSettings
+    buildInfoPackage := "giter8"
   )
 
 lazy val scaffold = (project in file("scaffold")).
   enablePlugins(BintrayPublish).
-  enablePlugins(AutomateHeaderPlugin).
   dependsOn(lib).
   settings(
     name := "sbt-giter8-scaffold",
@@ -94,14 +66,11 @@ lazy val scaffold = (project in file("scaffold")).
     scripted := ScriptedPlugin.scripted.dependsOn(publishLocal in lib).evaluated,
     test in Test := {
       scripted.toTask("").value
-    },
-    headerSettings,
-    excludes := Seq("src/main/scala/ScafoldPlugin.scala")
+    }
   )
 
 lazy val plugin = (project in file("plugin")).
   enablePlugins(BintrayPublish).
-  enablePlugins(AutomateHeaderPlugin).
   dependsOn(lib).
   settings(
     name := "sbt-giter8",
@@ -119,14 +88,11 @@ lazy val plugin = (project in file("plugin")).
     libraryDependencies += ("org.scala-sbt" % "scripted-plugin" % sbtVersion.value),
     test in Test := {
       scripted.toTask("").value
-    },
-    headerSettings,
-    excludes := Seq("src/main/scala/gio.scala")
+    }
   )
 
 lazy val lib = (project in file("library")).
   disablePlugins(BintrayPlugin).
-  enablePlugins(AutomateHeaderPlugin).
   enablePlugins(SonatypePublish).
   settings(
     name := "giter8-lib",
@@ -141,14 +107,8 @@ lazy val lib = (project in file("library")).
       case Some((2, scalaMajor)) if scalaMajor >= 11 =>
         Seq(scalaXml, parserCombinator)
       case _ => Nil
-      }),
-    headerSettings,
-    excludes := Seq(
-      "src/main/scala/maven.scala",
-      "src/main/scala/ScalastiHelper.scala",
-      "test/**"
+      })
     )
-  )
 
 def customCommands: Seq[Setting[_]] = Seq(
   commands += Command.command("release") { state =>