Round 2 of dead private variable removal.

LLVM is now -Wunused-private-field clean except for
- lib/MC/MCDisassembler/Disassembler.h. Not sure why it keeps all those unaccessible fields.
- gtest.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158096 91177308-0d34-0410-b5e6-96231b3b80d8

utils/TableGen/DAGISelEmitter.h

@@ -23,10 +23,9 @@ namespace llvm {
 /// and emission of the instruction selector.
 ///
 class DAGISelEmitter : public TableGenBackend {
-  RecordKeeper &Records;
   CodeGenDAGPatterns CGP;
 public:
-  explicit DAGISelEmitter(RecordKeeper &R) : Records(R), CGP(R) {}
+  explicit DAGISelEmitter(RecordKeeper &R) : CGP(R) {}
 
   // run - Output the isel, returning true on failure.
   void run(raw_ostream &OS);