Revert "Reland "MIPS: Add support for arch. revision 6 to mips32 port.""

src/mips/constants-mips.cc

Index: src/mips/constants-mips.cc
diff --git a/src/mips/constants-mips.cc b/src/mips/constants-mips.cc
index 30e4b2e003bce967e7c2ce868b6150797b529c02..f14992719dbf8a89c84e5dfac0070f7746cc8b3c 100644
--- a/src/mips/constants-mips.cc
+++ b/src/mips/constants-mips.cc
@@ -278,8 +278,6 @@ Instruction::Type Instruction::InstructionType() const {
     case COP1:    // Coprocessor instructions.
       switch (RsFieldRawNoAssert()) {
         case BC1:   // Branch on coprocessor condition.
-        case BC1EQZ:
-        case BC1NEZ:
           return kImmediateType;
         default:
           return kRegisterType;
@@ -294,7 +292,6 @@ Instruction::Type Instruction::InstructionType() const {
     case BLEZ:
     case BGTZ:
     case ADDI:
-    case DADDI:
     case ADDIU:
     case SLTI:
     case SLTIU:
@@ -306,8 +303,6 @@ Instruction::Type Instruction::InstructionType() const {
     case BNEL:
     case BLEZL:
     case BGTZL:
-    case BEQZC:
-    case BNEZC:
     case LB:
     case LH:
     case LWL: