Remove scalastyle configs from repository

* Drop plugin
* Drop scalastyle tests from make recipes

Makefile

@@ -28,7 +28,7 @@ CHISEL_VERSION = $(shell "$(SBT)" $(SBT_FLAGS) "show version" | tail -n 1 | cut
 TEST_OUTPUT_DIR ?= ./test_run_dur
 RM_DIRS 	:= $(TEST_OUTPUT_DIR)
 
-.PHONY:	smoke publish-local pubishLocal check clean jenkins-build coverage scaladoc test checkstyle compile \
+.PHONY:	smoke publish-local pubishLocal check clean jenkins-build coverage scaladoc test compile \
 	mill.build mill.test mill.publishLocal mill.build.all mill.test.all mill.publishLocal.all mill-tools
 
 default:	publishLocal
@@ -42,9 +42,6 @@ publish-local publishLocal:
 test:
 	$(SBT) $(SBT_FLAGS) test
 
-checkstyle:
-	$(SBT) $(SBT_FLAGS) scalastyle test:scalastyle
-
 coverage:
 	$(SBT) $(SBT_FLAGS) coverage test
 	$(SBT) $(SBT_FLAGS) coverageReport coverageAggregate
@@ -72,7 +69,7 @@ site:
 jenkins-build: clean
 	$(SBT) $(SBT_FLAGS) test
 	$(SBT) $(SBT_FLAGS) clean publishLocal
-	$(SBT) $(SBT_FLAGS) scalastyle coverage test
+	$(SBT) $(SBT_FLAGS) coverage test
 	$(SBT) $(SBT_FLAGS) coverageReport
 
 # Compile and package jar

build.sbt

@@ -46,7 +46,6 @@ lazy val commonSettings = Seq (
   scalacOptions := Seq("-deprecation", "-feature") ++ scalacOptionsVersion(scalaVersion.value),
   libraryDependencies += "org.scala-lang" % "scala-reflect" % scalaVersion.value,
   addCompilerPlugin("org.scalamacros" % "paradise" % "2.1.1" cross CrossVersion.full),
-  (scalastyleConfig in Test) := (baseDirectory in root).value / "scalastyle-test-config.xml",
   // Use the root project's unmanaged base for all sub-projects.
   unmanagedBase := (unmanagedBase in root).value,
   // Since we want to examine the classpath to determine if a dependency on firrtl is required,

project/plugins.sbt

@@ -4,8 +4,6 @@ resolvers += Classpaths.sbtPluginReleases
 
 resolvers += "jgit-repo" at "https://download.eclipse.org/jgit/maven"
 
-addSbtPlugin("org.scalastyle" %% "scalastyle-sbt-plugin" % "1.0.0")
-
 addSbtPlugin("org.scoverage" % "sbt-scoverage" % "1.6.1")
 
 addSbtPlugin("com.typesafe.sbt" % "sbt-site" % "1.4.0")