Remove FLAG_cache_optimized_code because we always have it on.

src/compiler.cc

Index: src/compiler.cc
diff --git a/src/compiler.cc b/src/compiler.cc
index d30b96779a1f0bcb6cd34f4e11e072e4b513daf1..4f4a40afb5a60c40235d80f9b32037a49c05d1fb 100644
--- a/src/compiler.cc
+++ b/src/compiler.cc
@@ -811,13 +811,11 @@ static void InsertCodeIntoOptimizedCodeMap(CompilationInfo* info) {
   if (function->shared()->bound()) return;
 
   // Cache optimized context-specific code.
-  if (FLAG_cache_optimized_code) {
-    Handle<SharedFunctionInfo> shared(function->shared());
-    Handle<LiteralsArray> literals(function->literals());
-    Handle<Context> native_context(function->context()->native_context());
-    SharedFunctionInfo::AddToOptimizedCodeMap(shared, native_context, code,
-                                              literals, info->osr_ast_id());
-  }
+  Handle<SharedFunctionInfo> shared(function->shared());
+  Handle<LiteralsArray> literals(function->literals());
+  Handle<Context> native_context(function->context()->native_context());
+  SharedFunctionInfo::AddToOptimizedCodeMap(shared, native_context, code,
+                                            literals, info->osr_ast_id());
 
   // Do not cache (native) context-independent code compiled for OSR.
   if (code->is_turbofanned() && info->is_osr()) return;