Drop support for Mips1 and Mips2.

llvm-svn: 139405
diff --git a/llvm/lib/Target/Mips/MipsSubtarget.h b/llvm/lib/Target/Mips/MipsSubtarget.h
index 533d4af..3733bec 100644
--- a/llvm/lib/Target/Mips/MipsSubtarget.h
+++ b/llvm/lib/Target/Mips/MipsSubtarget.h
@@ -34,7 +34,7 @@
 protected:
 
   enum MipsArchEnum {
-    Mips1, Mips2, Mips3, Mips4, Mips32, Mips32r2
+    Mips32, Mips32r2
   };
 
   // Mips architecture version
@@ -102,7 +102,6 @@
   /// subtarget options.  Definition of function is auto generated by tblgen.
   void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
 
-  bool isMips1() const { return MipsArchVersion == Mips1; }
   bool isMips32() const { return MipsArchVersion >= Mips32; }
   bool isMips32r2() const { return MipsArchVersion == Mips32r2; }