Use LLVM_DELETED_FUNCTION rather than '// do not implement' comments.

Also removes some redundant DNI comments on function declarations already
using the macro.

llvm-svn: 175466
diff --git a/llvm/lib/Target/R600/MCTargetDesc/R600MCCodeEmitter.cpp b/llvm/lib/Target/R600/MCTargetDesc/R600MCCodeEmitter.cpp
index 5a315cb..d207160 100644
--- a/llvm/lib/Target/R600/MCTargetDesc/R600MCCodeEmitter.cpp
+++ b/llvm/lib/Target/R600/MCTargetDesc/R600MCCodeEmitter.cpp
@@ -38,8 +38,8 @@
 namespace {
 
 class R600MCCodeEmitter : public AMDGPUMCCodeEmitter {
-  R600MCCodeEmitter(const R600MCCodeEmitter &); // DO NOT IMPLEMENT
-  void operator=(const R600MCCodeEmitter &); // DO NOT IMPLEMENT
+  R600MCCodeEmitter(const R600MCCodeEmitter &) LLVM_DELETED_FUNCTION;
+  void operator=(const R600MCCodeEmitter &) LLVM_DELETED_FUNCTION;
   const MCInstrInfo &MCII;
   const MCRegisterInfo &MRI;
   const MCSubtargetInfo &STI;