Remove MIPS support

runtime/vm/intermediate_language.cc

Index: runtime/vm/intermediate_language.cc
diff --git a/runtime/vm/intermediate_language.cc b/runtime/vm/intermediate_language.cc
index cfb7622d3a7f58b48206093d101e2b65f94acd93..103e8fae3a5ff60a629b27de06fef2049b0c669f 100644
--- a/runtime/vm/intermediate_language.cc
+++ b/runtime/vm/intermediate_language.cc
@@ -3051,8 +3051,8 @@ void TargetEntryInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
 #endif
 
     // The deoptimization descriptor points after the edge counter code for
-    // uniformity with ARM and MIPS, where we can reuse pattern matching
-    // code that matches backwards from the end of the pattern.
+    // uniformity with ARM, where we can reuse pattern matching code that
+    // matches backwards from the end of the pattern.
     compiler->AddCurrentDescriptor(RawPcDescriptors::kDeopt, GetDeoptId(),
                                    TokenPosition::kNoSource);
   }