Revert of Externalize deoptimization reasons.

src/mips/assembler-mips.cc

Index: src/mips/assembler-mips.cc
diff --git a/src/mips/assembler-mips.cc b/src/mips/assembler-mips.cc
index 182183f547bc9f7f7bf81baffbac69c228c4cd50..8e936e1947544aa1fa807885eefc3fa2b9a42ca9 100644
--- a/src/mips/assembler-mips.cc
+++ b/src/mips/assembler-mips.cc
@@ -2343,15 +2343,6 @@
   if (FLAG_code_comments) {
     CheckBuffer();
     RecordRelocInfo(RelocInfo::COMMENT, reinterpret_cast<intptr_t>(msg));
-  }
-}
-
-
-void Assembler::RecordDeoptReason(const int reason, const int raw_position) {
-  if (FLAG_trace_deopt) {
-    EnsureSpace ensure_space(this);
-    RecordRelocInfo(RelocInfo::POSITION, raw_position);
-    RecordRelocInfo(RelocInfo::DEOPT_REASON, reason);
   }
 }