import re


def remove_phone_number(input_text: str) -> str:
    """ Remove phone number in the input text """
    regex_pattern = '(?:\+?(\d{1,3}))?[-. (]*(\d{3})[-. )]*(\d{3})[-. ]*(\d{4})(?: *x(\d+))?'
    return re.sub(regex_pattern, '', input_text)