remove java home wrapper script

Bazel uses an embedded JDK and does not need a
system JDK to run. This fix prevents a warning
from being printed if there is no system jdk
installed.

bazel.rb

@@ -26,7 +26,6 @@ def install
     system "./bazel-#{version}-installer-darwin-x86_64.sh", "--prefix=#{buildpath}"
     bin.install 'lib/bazel/bin/bazel' => 'bazel'
     bin.install 'lib/bazel/bin/bazel-real' => 'bazel-real'
-    bin.env_script_all_files(libexec / 'bin', Language::Java.overridable_java_home_env)
     bash_completion.install 'lib/bazel/bin/bazel-complete.bash'
   end