Revert "[SLP]Add debug counter support"

This reverts commit 67dd9d2 to fix https://lab.llvm.org/buildbot/#/builders/11/builds/6012

Author: alexey-bataev

llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp

@@ -79,7 +79,6 @@
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/DOTGraphTraits.h"
 #include "llvm/Support/Debug.h"
-#include "llvm/Support/DebugCounter.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/GraphWriter.h"
 #include "llvm/Support/InstructionCost.h"
@@ -110,9 +109,6 @@ using namespace slpvectorizer;
 
 STATISTIC(NumVectorInstructions, "Number of vector instructions generated");
 
-DEBUG_COUNTER(VectorizedGraphs, "slp-vectorized",
-              "Controls which SLP graphs should be vectorized.");
-
 static cl::opt<bool>
     RunSLPVectorization("vectorize-slp", cl::init(true), cl::Hidden,
                         cl::desc("Run the SLP vectorization passes"));
@@ -11179,9 +11175,6 @@ bool BoUpSLP::isLoadCombineCandidate(ArrayRef<Value *> Stores) const {
 }
 
 bool BoUpSLP::isTreeTinyAndNotFullyVectorizable(bool ForReduction) const {
-  if (!DebugCounter::shouldExecute(VectorizedGraphs))
-    return true;
-
   // No need to vectorize inserts of gathered values.
   if (VectorizableTree.size() == 2 &&
       isa<InsertElementInst>(VectorizableTree[0]->Scalars[0]) &&