Revert "[lit] Adding config initialization to lit tests in clang-tools-extra"

This reverts commit r328060 because a test that was inteded to run on
Windows but never ran before due to the missing config initialization
is now being executed and is failing.

llvm-svn: 328069

clang-tools-extra/test/lit.site.cfg.in

@@ -23,7 +23,5 @@ except KeyError:
     key, = e.args
     lit_config.fatal("unable to find %r parameter, use '--param=%s=VALUE'" % (key,key))
 
-@LIT_SITE_CFG_IN_FOOTER@
-
 # Let the main config do the real work.
 lit_config.load_config(config, "@CLANG_TOOLS_SOURCE_DIR@/test/lit.cfg")