<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def remove_properties_containing_None(properties_dict):
 """ removes keys from a dict those values == None json schema validation might fail if they are set and the type or format of the property does not match """

    # remove empty properties - as validations may fail
    new_dict  = dict()
    for key in properties_dict.keys():
        value = properties_dict[key]
        if value is not None:
            new_dict[key] = value
    return new_dict