Remove --harmony-regexps flag

test/cctest/test-api.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 19881 matching lines @@
   Visitor42 visitor(&object2);
   isolate->VisitHandlesForPartialDependence(&visitor);
   CHECK_EQ(1, visitor.counter_);
 
   object1.Reset();
   object2.Reset();
 }
 
 
 TEST(RegExp) {
-  i::FLAG_harmony_regexps = true;
   i::FLAG_harmony_unicode_regexps = true;
   LocalContext context;
   v8::HandleScope scope(context->GetIsolate());
 
   v8::Local<v8::RegExp> re =
       v8::RegExp::New(context.local(), v8_str("foo"), v8::RegExp::kNone)
           .ToLocalChecked();
   CHECK(re->IsRegExp());
   CHECK(re->GetSource()->Equals(context.local(), v8_str("foo")).FromJust());
   CHECK_EQ(v8::RegExp::kNone, re->GetFlags());
@@ skipping 5019 matching lines @@
   }
   delete garbage;
   // Check that moderate memory pressure notification sets GC into memory
   // optimizing mode.
   isolate->MemoryPressureNotification(v8::MemoryPressureLevel::kModerate);
   CHECK(CcTest::i_isolate()->heap()->ShouldOptimizeForMemoryUsage());
   // Check that disabling memory pressure returns GC into normal mode.
   isolate->MemoryPressureNotification(v8::MemoryPressureLevel::kNone);
   CHECK(!CcTest::i_isolate()->heap()->ShouldOptimizeForMemoryUsage());
 }