Remove default usage of semanticdbs.

BUILD.tools

@@ -1,8 +1,6 @@
 # JVM artifacts that Pants itself depends on.
 # http://pantsbuild.github.io/dev_tasks.html#jvm-tool-bootstrapping
 
-SCALA_REV='2.11.11'
-
 target(name = 'scala-js-cli', dependencies=['contrib/scalajs/3rdparty/jvm/org/scala-js:cli'])
 target(name = 'scala-js-compiler', dependencies=[
   'contrib/scalajs/3rdparty/jvm/org/scala-js:compiler',
@@ -37,6 +35,7 @@ jar_library(name = 'scrooge-linter',
               '3rdparty:thrift-0.6.1',
             ])
 
+
 # Google doesn't publish Kythe jars (yet?).  So we publish them to a custom repo
 # (https://github.com/benjyw/binhost) for now.  See build-support/ivy/ivysettings.xml
 # for more info.
@@ -49,8 +48,3 @@ jar_library(
   name='kythe-indexer',
   jars = [jar(org='kythe', name='indexers/java_indexer', rev='v0.0.26-snowchain3')]
 )
-
-jar_library(
-  name = 'scalac-plugin-dep',
-  jars = [jar(org='org.scalameta', name='semanticdb-scalac_{}'.format(SCALA_REV), rev='2.0.0-RC1')],
-)

pants.ini

@@ -151,24 +151,17 @@ args: [
     '-C-encoding', '-CUTF-8',
     '-S-encoding', '-SUTF-8',
     '-S-g:vars',
-    '-S-Yrangepos',
   ]
 warning_args: [
     '-S-deprecation',
     '-S-unchecked',
     # request warnings for http://www.scala-lang.org/api/2.10.4/index.html#scala.language$
     '-S-feature',
-    '-S-Xlint',
-    '-S-Ywarn-unused-import',
   ]
 no_warning_args: [
     '-S-nowarn',
   ]
 
-scalac_plugins: [
-    'scalahost',
-  ]
-
 [lint.checkstyle]
 configuration: %(pants_supportdir)s/checkstyle/coding_style.xml