Revert of [regexp] implement /ui to mirror the implementation for /i.

test/cctest/test-strings.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 1364 matching lines @@
 
 TEST(IsAscii) {
   CHECK(String::IsAscii(static_cast<char*>(NULL), 0));
   CHECK(String::IsOneByte(static_cast<uc16*>(NULL), 0));
 }
 
 
 
 template<typename Op, bool return_first>
 static uint16_t ConvertLatin1(uint16_t c) {
-  uc32 result[Op::kMaxWidth];
+  uint32_t result[Op::kMaxWidth];
   int chars;
   chars = Op::Convert(c, 0, result, NULL);
   if (chars == 0) return 0;
   CHECK_LE(chars, static_cast<int>(sizeof(result)));
   if (!return_first && chars > 1) {
     return 0;
   }
   return result[0];
 }
 
@@ skipping 105 matching lines @@
   Handle<String> arg0 = isolate->factory()->NewStringFromAsciiChecked("arg0");
   Handle<String> arg1 = isolate->factory()->NewStringFromAsciiChecked("arg1");
   Handle<String> arg2 = isolate->factory()->NewStringFromAsciiChecked("arg2");
   Handle<String> result =
       MessageTemplate::FormatMessage(MessageTemplate::kPropertyNotFunction,
                                      arg0, arg1, arg2).ToHandleChecked();
   Handle<String> expected = isolate->factory()->NewStringFromAsciiChecked(
       "'arg0' returned for property 'arg1' of object 'arg2' is not a function");
   CHECK(String::Equals(result, expected));
 }