MIPS32: Remove EXTRA, NORMAL instruction type check.

src/mips64/simulator-mips64.h

Index: src/mips64/simulator-mips64.h
diff --git a/src/mips64/simulator-mips64.h b/src/mips64/simulator-mips64.h
index dd050f1f1014b48e4f5d6d995e940128466ba2dc..44b89ec90c9e4a325dc4465bd4e09674318933d8 100644
--- a/src/mips64/simulator-mips64.h
+++ b/src/mips64/simulator-mips64.h
@@ -149,7 +149,7 @@ class SimInstruction : public InstructionGetters<SimInstructionBase> {
   SimInstruction& operator=(Instruction* instr) {
     operand_ = *reinterpret_cast<const int32_t*>(instr);
     instr_ = instr;
-    type_ = InstructionBase::InstructionType(EXTRA);
+    type_ = InstructionBase::InstructionType();
     DCHECK(reinterpret_cast<void*>(&operand_) == this);
     return *this;
   }