code: public static String removePattern(final String source, final String regex) {
          return replacePattern(source, regex, N.EMPTY_STRING);
      }
docs: Removes each substring of the source String that matches the given
  regular expression using the DOTALL option.
  
  @param source
  the source string
  @param regex
  the regular expression to which this string is to be matched
  @return The resulting {@code String}
  @see String#replaceAll(String, String)
  @see Pattern#DOTALL
  @since 3.2