tests: Stop mangling '-vg' into the triple, we don't use this currently.

- Also, lit is going to get a valgrind feature, instead.

llvm-svn: 166301

clang/test/lit.cfg

@@ -165,11 +165,6 @@ def inferClang(PATH):
 
     return clang
 
-# When running under valgrind, we mangle '-vg' onto the end of the triple so we
-# can check it with XFAIL and XTARGET.
-if lit.useValgrind:
-    config.target_triple += '-vg'
-
 config.clang = inferClang(config.environment['PATH']).replace('\\', '/')
 if not lit.quiet:
     lit.note('using clang: %r' % config.clang)