Remove namespace

Change-Id: Ia66c6504e1edaef9bb8ce607c869deac721aff2f

Author: jrbyrnes

llvm/lib/Target/AMDGPU/AMDGPUIGroupLP.cpp

@@ -2696,16 +2696,12 @@ bool IGroupLPDAGMutation::initIGLPOpt(SUnit &SU) {
 
 } // namespace
 
-namespace llvm {
-
 /// \p Phase specifes whether or not this is a reentry into the
 /// IGroupLPDAGMutation. Since there may be multiple scheduling passes on the
 /// same scheduling region (e.g. pre and post-RA scheduling / multiple
 /// scheduling "phases"), we can reenter this mutation framework more than once
 /// for a given region.
 std::unique_ptr<ScheduleDAGMutation>
-createIGroupLPDAGMutation(AMDGPU::SchedulingPhase Phase) {
+llvm::createIGroupLPDAGMutation(AMDGPU::SchedulingPhase Phase) {
   return std::make_unique<IGroupLPDAGMutation>(Phase);
 }
-
-}