[regexp] Remove IsRegExp intrinsic

src/js/macros.py

Index: src/js/macros.py
diff --git a/src/js/macros.py b/src/js/macros.py
index ffa988b819ff8a731dbe6d1ba837b8bc00bd7d15..36e00ac2bd0bf0fc1cac8784c26cb5d870af8a7a 100644
--- a/src/js/macros.py
+++ b/src/js/macros.py
@@ -60,7 +60,6 @@ macro IS_NULL_OR_UNDEFINED(arg) = (arg == null);
 macro IS_NUMBER(arg)            = (typeof(arg) === 'number');
 macro IS_OBJECT(arg)            = (typeof(arg) === 'object');
 macro IS_PROXY(arg)             = (%_IsJSProxy(arg));
-macro IS_REGEXP(arg)            = (%_IsRegExp(arg));
 macro IS_SCRIPT(arg)            = (%_ClassOf(arg) === 'Script');
 macro IS_SET(arg)               = (%_ClassOf(arg) === 'Set');
 macro IS_SET_ITERATOR(arg)      = (%_ClassOf(arg) === 'Set Iterator');