[crankshaft] Remove the useless HCallStub instruction.

src/crankshaft/hydrogen-instructions.cc

Index: src/crankshaft/hydrogen-instructions.cc
diff --git a/src/crankshaft/hydrogen-instructions.cc b/src/crankshaft/hydrogen-instructions.cc
index f21bc9a7ebd4a39c4abfa30d954f938c50c678ef..23aa9b0a12c95e34556b3827f08c896cc4ebd023 100644
--- a/src/crankshaft/hydrogen-instructions.cc
+++ b/src/crankshaft/hydrogen-instructions.cc
@@ -776,7 +776,6 @@ bool HInstruction::CanDeoptimize() {
     case HValue::kBoundsCheckBaseIndexInformation:
     case HValue::kCallFunction:
     case HValue::kCallNewArray:
-    case HValue::kCallStub:
     case HValue::kCapturedObject:
     case HValue::kClassOfTestAndBranch:
     case HValue::kCompareGeneric:
@@ -1730,12 +1729,6 @@ std::ostream& HCheckInstanceType::PrintDataTo(
 }
 
 
-std::ostream& HCallStub::PrintDataTo(std::ostream& os) const {  // NOLINT
-  os << CodeStub::MajorName(major_key_) << " ";
-  return HUnaryCall::PrintDataTo(os);
-}
-
-
 std::ostream& HUnknownOSRValue::PrintDataTo(std::ostream& os) const {  // NOLINT
   const char* type = "expression";
   if (environment_->is_local_index(index_)) type = "local";