[turbofan] Enable optimization of top-level eval code.

src/compiler.cc

Index: src/compiler.cc
diff --git a/src/compiler.cc b/src/compiler.cc
index 3ee901c16ffebf832d305d9c5b514cf360cf1851..0394d5be40d841d5033ff91b623de40fc1d95399 100644
--- a/src/compiler.cc
+++ b/src/compiler.cc
@@ -1333,12 +1333,6 @@ MaybeHandle<JSFunction> Compiler::GetFunctionFromEval(
     if (shared_info.is_null()) {
       return MaybeHandle<JSFunction>();
     } else {
-      // Explicitly disable optimization for eval code. We're not yet prepared
-      // to handle eval-code in the optimizing compiler.
-      if (restriction != ONLY_SINGLE_FUNCTION_LITERAL) {
-        shared_info->DisableOptimization(kEval);
-      }
-
       // If caller is strict mode, the result must be in strict mode as well.
       DCHECK(is_sloppy(language_mode) ||
              is_strict(shared_info->language_mode()));