Revert "Insert random noops to increase security against ROP attacks (llvm)"

This reverts commit:
http://reviews.llvm.org/D3392

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225948 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/Passes.cpp

@@ -583,9 +583,6 @@ void TargetPassConfig::addMachinePasses() {
       addPass(createGCInfoPrinter(dbgs()), false, false);
   }
 
-  if (TM->Options.NoopInsertion)
-    addPass(&NoopInsertionID);
-
   // Basic block placement.
   if (getOptLevel() != CodeGenOpt::None)
     addBlockPlacement();