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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def remove_usb_device_source(self, id_p):
 """Removes a previously added USB device source. in id_p of type str The identifier used when the source was added. """

        if not isinstance(id_p, basestring):
            raise TypeError("id_p can only be an instance of type basestring")
        self._call("removeUSBDeviceSource",
                     in_p=[id_p])