Only emit one set of braces for __VERSION__, getClangFullRepositoryVersion already adds some.

No test as the output is highly dependend on the local configuration.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@157520 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Basic/Version.cpp b/lib/Basic/Version.cpp
index 2183be4..c2b1479 100644
--- a/lib/Basic/Version.cpp
+++ b/lib/Basic/Version.cpp
@@ -136,8 +136,7 @@
 #ifdef CLANG_VENDOR
   OS << CLANG_VENDOR;
 #endif
-  OS << "Clang " CLANG_VERSION_STRING " ("
-     << getClangFullRepositoryVersion() << ')';
+  OS << "Clang " CLANG_VERSION_STRING " " << getClangFullRepositoryVersion();
   return OS.str();
 }