Permanently deletes a RegexPatternSet. You can't delete a
RegexPatternSet if it's still used in any RegexMatchSet or if the
RegexPatternSet is not empty.
wafregional_delete_regex_pattern_set(RegexPatternSetId, ChangeToken)[required] The RegexPatternSetId of the RegexPatternSet that you want to delete.
RegexPatternSetId is returned by CreateRegexPatternSet and by
ListRegexPatternSets.
[required] The value returned by the most recent call to GetChangeToken.
svc$delete_regex_pattern_set( RegexPatternSetId = "string", ChangeToken = "string" )