[turbofan] Remove kInterpreterDispatch CallDescriptor kind in favor of flag.

src/compiler/instruction-selector.cc

Index: src/compiler/instruction-selector.cc
diff --git a/src/compiler/instruction-selector.cc b/src/compiler/instruction-selector.cc
index fde7ba3c3d22ff64eb37b040e0de402f23daee80..434ea0e378c6acf8ba983d091b0d84a15308a6dd 100644
--- a/src/compiler/instruction-selector.cc
+++ b/src/compiler/instruction-selector.cc
@@ -345,9 +345,6 @@ void InstructionSelector::InitializeCallBuffer(Node* call, CallBuffer* buffer,
           g.UseLocation(callee, buffer->descriptor->GetInputLocation(0),
                         buffer->descriptor->GetInputType(0)));
       break;
-    case CallDescriptor::kInterpreterDispatch:
-      buffer->instruction_args.push_back(g.UseRegister(callee));
-      break;
   }
   DCHECK_EQ(1u, buffer->instruction_args.size());