Deprecate useless CompilationInfo::IsOptimizable predicate.

src/full-codegen/mips64/full-codegen-mips64.cc

Index: src/full-codegen/mips64/full-codegen-mips64.cc
diff --git a/src/full-codegen/mips64/full-codegen-mips64.cc b/src/full-codegen/mips64/full-codegen-mips64.cc
index 231e8ba3840a77814da2e4d0b62b0f31565935af..3edb1c3a3bf590545adb3ac8596e56b1dda6e647 100644
--- a/src/full-codegen/mips64/full-codegen-mips64.cc
+++ b/src/full-codegen/mips64/full-codegen-mips64.cc
@@ -790,7 +790,7 @@ void FullCodeGenerator::PrepareForBailoutBeforeSplit(Expression* expr,
   // Only prepare for bailouts before splits if we're in a test
   // context. Otherwise, we let the Visit function deal with the
   // preparation to avoid preparing with the same AST id twice.
-  if (!context()->IsTest() || !info_->IsOptimizable()) return;
+  if (!context()->IsTest()) return;
 
   Label skip;
   if (should_normalize) __ Branch(&skip);