AMDGPU: Remove debugger related subtarget features

As far as I know these aren't needed anymore.

llvm-svn: 354634
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUHSAMetadataStreamer.cpp b/llvm/lib/Target/AMDGPU/AMDGPUHSAMetadataStreamer.cpp
index 15cee69..f93ccf6 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUHSAMetadataStreamer.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPUHSAMetadataStreamer.cpp
@@ -239,23 +239,7 @@
 Kernel::DebugProps::Metadata
 MetadataStreamerV2::getHSADebugProps(const MachineFunction &MF,
                                      const SIProgramInfo &ProgramInfo) const {
-  const GCNSubtarget &STM = MF.getSubtarget<GCNSubtarget>();
-  HSAMD::Kernel::DebugProps::Metadata HSADebugProps;
-
-  if (!STM.debuggerSupported())
-    return HSADebugProps;
-
-  HSADebugProps.mDebuggerABIVersion.push_back(1);
-  HSADebugProps.mDebuggerABIVersion.push_back(0);
-
-  if (STM.debuggerEmitPrologue()) {
-    HSADebugProps.mPrivateSegmentBufferSGPR =
-        ProgramInfo.DebuggerPrivateSegmentBufferSGPR;
-    HSADebugProps.mWavefrontPrivateSegmentOffsetSGPR =
-        ProgramInfo.DebuggerWavefrontPrivateSegmentOffsetSGPR;
-  }
-
-  return HSADebugProps;
+  return HSAMD::Kernel::DebugProps::Metadata();
 }
 
 void MetadataStreamerV2::emitVersion() {