parameters: (string, prefix)
return_statement: return string
docstring: Removes prefix from a string until the new string
    no longer starts with the prefix.
docstring_summary: Removes prefix from a string until the new string
    no longer starts with the prefix.
docstring_tokens: Removes prefix from a string until the new string no longer starts with the prefix .
function: def rm_prefix(string, prefix):
    """
    Removes prefix from a string until the new string
    no longer starts with the prefix.
    """
    while string.startswith(prefix):
      string = string[len(prefix):]
    return string
function_tokens: def rm_prefix ( string , prefix ) : while string . startswith ( prefix ) : string = string [ len ( prefix ) : ] return string