Deprecate useless CompilationInfo::IsOptimizable predicate.

src/full-codegen/arm64/full-codegen-arm64.cc

Index: src/full-codegen/arm64/full-codegen-arm64.cc
diff --git a/src/full-codegen/arm64/full-codegen-arm64.cc b/src/full-codegen/arm64/full-codegen-arm64.cc
index 73aaf46abde31a4bb33c734e2c76afc3d2942e54..be70f638cef1da7ef25980a460cb636eda1abeae 100644
--- a/src/full-codegen/arm64/full-codegen-arm64.cc
+++ b/src/full-codegen/arm64/full-codegen-arm64.cc
@@ -789,7 +789,7 @@ 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;
 
   // TODO(all): Investigate to see if there is something to work on here.
   Label skip;