[analyzer] Remove unused method.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@155243 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/StaticAnalyzer/Core/PathSensitive/SymbolManager.h

@@ -583,7 +583,6 @@ public:
   ~SymbolReaper() {}
 
   const LocationContext *getLocationContext() const { return LCtx; }
-  const Stmt *getCurrentStatement() const { return Loc; }
 
   bool isLive(SymbolRef sym);
   bool isLiveRegion(const MemRegion *region);