[ORC] NFC remove unimplemented query

Summary: CFGWalk Query is unimplemented for valid reasons. But the declaration got included in commit file.

Reviewers: lhames, dblaikie

Reviewed By: dblaikie

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D66289

llvm-svn: 370085

llvm/include/llvm/ExecutionEngine/Orc/SpeculateAnalyses.h

@@ -35,13 +35,6 @@ public:
   ResultTy operator()(Function &F, FunctionAnalysisManager &FAM);
 };
 
-// Walk the CFG by exploting BranchProbabilityInfo
-class CFGWalkQuery {
-public:
-  using ResultTy = Optional<DenseMap<StringRef, DenseSet<StringRef>>>;
-  ResultTy operator()(Function &F, FunctionAnalysisManager &FAM);
-};
-
 } // namespace orc
 } // namespace llvm