[TTI] There is actually no realistic way to pop TTI implementations off

the stack of the analysis group because they are all immutable passes.
This is made clear by Craig's recent work to use override
systematically -- we weren't overriding anything for 'finalizePass'
because there is no such thing.

This is kind of a lame restriction on the API -- we can no longer push
and pop things, we just set up the stack and run. However, I'm not
invested in building some better solution on top of the existing
(terrifying) immutable pass and legacy pass manager.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203437 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/XCore/XCoreTargetTransformInfo.cpp

@@ -46,10 +46,6 @@ public:
     pushTTIStack(this);
   }
 
-  virtual void finalizePass() {
-    popTTIStack();
-  }
-
   virtual void getAnalysisUsage(AnalysisUsage &AU) const override {
     TargetTransformInfo::getAnalysisUsage(AU);
   }