Remove obsolete keywords which are no longer relevant.

llvm-svn: 112382
diff --git a/llvm/utils/vim/llvm.vim b/llvm/utils/vim/llvm.vim
index 2e650b1..28ab2e3 100644
--- a/llvm/utils/vim/llvm.vim
+++ b/llvm/utils/vim/llvm.vim
@@ -59,8 +59,7 @@
 syn keyword llvmKeyword blockaddress
 
 " Obsolete keywords.
-syn keyword llvmError  uninitialized implementation
-syn keyword llvmError  getresult big little endian begin end
+syn keyword llvmError  getresult begin end
 
 " Misc syntax.
 syn match   llvmNoName /[%@]\d\+\>/