[turbofan] Remove obsolete --turbo-try-catch flag.

src/compiler/ast-graph-builder.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/ast-graph-builder.h"
 
 #include "src/compiler.h"
 #include "src/compiler/ast-loop-assignment-analyzer.h"
 #include "src/compiler/control-builders.h"
 #include "src/compiler/js-type-feedback.h"
@@ skipping 1404 matching lines @@
 
   // Create a catch scope that binds the exception.
   Node* exception = try_control.GetExceptionNode();
   Handle<String> name = stmt->variable()->name();
   const Operator* op = javascript()->CreateCatchContext(name);
   Node* context = NewNode(op, exception, GetFunctionClosureForContext());
 
   // Evaluate the catch-block.
   VisitInScope(stmt->catch_block(), stmt->scope(), context);
   try_control.EndCatch();
-
-  // TODO(mstarzinger): Remove bailout once everything works.
-  if (!FLAG_turbo_try_catch) SetStackOverflow();
 }
 
 
 void AstGraphBuilder::VisitTryFinallyStatement(TryFinallyStatement* stmt) {
   TryFinallyBuilder try_control(this);
   ExternalReference message_object =
       ExternalReference::address_of_pending_message_obj(isolate());
 
   // We keep a record of all paths that enter the finally-block to be able to
   // dispatch to the correct continuation point after the statements in the
@@ skipping 2826 matching lines @@
     // Phi does not exist yet, introduce one.
     value = NewPhi(inputs, value, control);
     value->ReplaceInput(inputs - 1, other);
   }
   return value;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8