Fix broken caching support for the Buck integration

Summary:public
It seems that the support for using the Buck cache with Infer has been brocken for a while.

Reviewed By: sblackshear

Differential Revision: D3079493

fb-gh-sync-id: fd92d1c
shipit-source-id: fd92d1c

infer/lib/python/inferlib/bucklib.py

@@ -53,11 +53,6 @@ cmd = ['{0}'] + {1} + ['--', 'javac'] + sys.argv[1:]
 subprocess.check_call(cmd)
 """
 
-LOCAL_CONFIG = """\
-    [tools]
-        javac = %s
-"""
-
 
 def prepare_build(args):
     """Creates script that redirects javac calls to infer and a local buck

infer/lib/python/inferlib/jwlib.py

@@ -186,7 +186,7 @@ class AnalyzerWithFrontendWrapper(analyze.AnalyzerWrapper):
         if self.javac.args.version:
             if self.args.buck:
                 key = self.args.analyzer
-                print(utils.infer_key(key), file=sys.stderr)
+                utils.stderr(utils.infer_key(key))
             else:
                 return self.javac.run()
         else: