[strong] Remove all remainders of strong mode

test/cctest/compiler/test-run-inlining.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/compiler/function-tester.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
@@ skipping 524 matching lines @@
       "  %SetForceInlineFlag(baz);"
       "  return bar;"
       "})();",
       kRestrictedInliningFlags);
 
   InstallAssertInlineCountHelper(CcTest::isolate());
   T.CheckCall(T.true_value());
 }
 
 
-TEST(StrongModeArity) {
-  FLAG_strong_mode = true;
-  FunctionTester T(
-      "(function () {"
-      "  function foo(x, y) { 'use strong'; return x; }"
-      "  function bar(x, y) { return foo(x); }"
-      "  return bar;"
-      "})();",
-      kInlineFlags);
-  T.CheckThrows(T.undefined(), T.undefined());
-}
-
-
-TEST(StrongModeArityOuter) {
-  FLAG_strong_mode = true;
-  FunctionTester T(
-      "(function () {"
-      "  'use strong';"
-      "  function foo(x, y) { return x; }"
-      "  function bar(x, y) { return foo(x); }"
-      "  return bar;"
-      "})();",
-      kInlineFlags);
-  T.CheckThrows(T.undefined(), T.undefined());
-}
-
-
 TEST(InlineSelfRecursive) {
   FunctionTester T(
       "(function () {"
       "  function foo(x) { "
       "    AssertInlineCount(1);"
       "    if (x == 1) return foo(12);"
       "    return x;"
       "  }"
       "  return foo;"
       "})();",
@@ skipping 16 matching lines @@
       "})();",
       kInlineFlags);
 
   InstallAssertInlineCountHelper(CcTest::isolate());
   T.CheckCall(T.Val(42), T.Val(1));
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8