[turbofan] Deprecate --turbo-try-finally flag.

test/cctest/compiler/test-run-deopt.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/frames-inl.h"
 #include "test/cctest/cctest.h"
 #include "test/cctest/compiler/function-tester.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 66 matching lines @@
       "})");
 
   CompileRun("function DeoptAndThrow(f) { %DeoptimizeFunction(f); throw 0; }");
   InstallIsOptimizedHelper(CcTest::isolate());
   T.CheckCall(T.false_value());
 }
 
 
 TEST(DeoptExceptionHandlerFinally) {
   FLAG_allow_natives_syntax = true;
-  FLAG_turbo_try_finally = true;
 
   FunctionTester T(
       "(function f() {"
       "  var is_opt = IsOptimized;"
       "  try {"
       "    DeoptAndThrow(f);"
       "  } finally {"
       "    return is_opt();"
       "  }"
       "})");
@@ skipping 14 matching lines @@
       "  %DeoptimizeFunction(foo);"
       "  return 1;"
       "})");
 
   T.CheckCall(T.Val(1));
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8