Convert GRSimpleAPIChecks in BasicObjCFoundationChecks to be Checkers.

llvm-svn: 116971
diff --git a/clang/lib/Checker/GRCoreEngine.cpp b/clang/lib/Checker/GRCoreEngine.cpp
index 83a53b3..4ade15f 100644
--- a/clang/lib/Checker/GRCoreEngine.cpp
+++ b/clang/lib/Checker/GRCoreEngine.cpp
@@ -461,14 +461,8 @@
 ExplodedNode* GRStmtNodeBuilder::MakeNode(ExplodedNodeSet& Dst, const Stmt* S, 
                                           ExplodedNode* Pred, const GRState* St,
                                           ProgramPoint::Kind K) {
+
   const GRState* PredState = GetState(Pred);
-
-  // If the state hasn't changed, don't generate a new node.
-  if (!BuildSinks && St == PredState && Auditor == 0) {
-    Dst.Add(Pred);
-    return NULL;
-  }
-
   ExplodedNode* N = generateNode(S, St, Pred, K);
 
   if (N) {