Prep for merging 3.4: Undo changes from 3.3 branch

lib/Target/NVPTX/NVPTXISelDAGToDAG.h

Index: lib/Target/NVPTX/NVPTXISelDAGToDAG.h
diff --git a/lib/Target/NVPTX/NVPTXISelDAGToDAG.h b/lib/Target/NVPTX/NVPTXISelDAGToDAG.h
index ed16d4450b261f2ad0c397aaf83ee331a3187736..70e8e464297de98670678e370974cf235b0f2e4a 100644
--- a/lib/Target/NVPTX/NVPTXISelDAGToDAG.h
+++ b/lib/Target/NVPTX/NVPTXISelDAGToDAG.h
@@ -41,10 +41,6 @@ class LLVM_LIBRARY_VISIBILITY NVPTXDAGToDAGISel : public SelectionDAGISel {
   //    Otherwise, use div.full
   int do_DIVF32_PREC;
 
-  // If true, generate sqrt.rn, else generate sqrt.approx. If FTZ
-  // is true, then generate the corresponding FTZ version.
-  bool do_SQRTF32_PREC;
-
   // If true, add .ftz to f32 instructions.
   // This is only meaningful for sm_20 and later, as the default
   // is not ftz.