Revert of [regexp] Port RegExpConstructor

src/heap-symbols.h

 // Copyright 2015 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.
 
 #ifndef V8_HEAP_SYMBOLS_H_
 #define V8_HEAP_SYMBOLS_H_
 
 #define INTERNALIZED_STRING_LIST(V)                                \
   V(anonymous_string, "anonymous")                                 \
   V(apply_string, "apply")                                         \
@@ skipping 43 matching lines @@
   V(display_name_string, "displayName")                            \
   V(done_string, "done")                                           \
   V(dot_result_string, ".result")                                  \
   V(dot_string, ".")                                               \
   V(entries_string, "entries")                                     \
   V(enumerable_string, "enumerable")                               \
   V(Error_string, "Error")                                         \
   V(eval_string, "eval")                                           \
   V(EvalError_string, "EvalError")                                 \
   V(false_string, "false")                                         \
-  V(flags_string, "flags")                                         \
   V(float32x4_string, "float32x4")                                 \
   V(Float32x4_string, "Float32x4")                                 \
   V(for_api_string, "for_api")                                     \
   V(for_string, "for")                                             \
   V(function_string, "function")                                   \
   V(Function_string, "Function")                                   \
   V(Generator_string, "Generator")                                 \
   V(getOwnPropertyDescriptor_string, "getOwnPropertyDescriptor")   \
   V(getOwnPropertyDescriptors_string, "getOwnPropertyDescriptors") \
   V(getPrototypeOf_string, "getPrototypeOf")                       \
@@ skipping 140 matching lines @@
 // Well-Known Symbols are "Public" symbols, which have a bit set which causes
 // them to produce an undefined value when a load results in a failed access
 // check. Because this behaviour is not specified properly as of yet, it only
 // applies to a subset of spec-defined Well-Known Symbols.
 #define WELL_KNOWN_SYMBOL_LIST(V)                           \
   V(has_instance_symbol, Symbol.hasInstance)                \
   V(is_concat_spreadable_symbol, Symbol.isConcatSpreadable) \
   V(to_string_tag_symbol, Symbol.toStringTag)
 
 #endif  // V8_HEAP_SYMBOLS_H_