Simplify libIndex Makefile, which doesn't need to worry about altivec support.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105639 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Index/Makefile

@@ -12,14 +12,8 @@
 ##===----------------------------------------------------------------------===##
 
 CLANG_LEVEL := ../..
-include $(CLANG_LEVEL)/../../Makefile.config
-
 LIBRARYNAME := clangIndex
 BUILD_ARCHIVE = 1
 
-ifeq ($(ARCH),PowerPC)
-CXX.Flags += -maltivec
-endif
-
 include $(CLANG_LEVEL)/Makefile