MIPS32: Remove EXTRA, NORMAL instruction type check.

src/mips/disasm-mips.cc

Index: src/mips/disasm-mips.cc
diff --git a/src/mips/disasm-mips.cc b/src/mips/disasm-mips.cc
index afeb9a4c1770504f170fef9e8363f0479ab4f419..f541e9143f5001e74a789cfca26f179301b399cd 100644
--- a/src/mips/disasm-mips.cc
+++ b/src/mips/disasm-mips.cc
@@ -1712,7 +1712,7 @@ int Decoder::InstructionDecode(byte* instr_ptr) {
   out_buffer_pos_ += SNPrintF(out_buffer_ + out_buffer_pos_,
                                    "%08x       ",
                                    instr->InstructionBits());
-  switch (instr->InstructionType(Instruction::EXTRA)) {
+  switch (instr->InstructionType()) {
     case Instruction::kRegisterType: {
       DecodeTypeRegister(instr);
       break;