def strip_mcs(self, idx):
mcs = collections.namedtuple(<EOL>'<STR_LIT>', ['<STR_LIT>', '<STR_LIT:index>', '<STR_LIT>', '<STR_LIT>', '<STR_LIT>',<EOL>'<STR_LIT>', '<STR_LIT>', '<STR_LIT>', '<STR_LIT>',<EOL>'<STR_LIT>'])<EOL>idx = Radiotap.align(idx, <NUM_LIT:1>)<EOL>known, flags, index = struct.unpack_from('<STR_LIT>', self._rtap, idx)<EOL>bits = format(flags, '<STR_LIT>')[::-<NUM_LIT:1>]<EOL>mcs.known = known               <EOL>mcs.index = index               <EOL>mcs.have_bw = int(bits[<NUM_LIT:0>])      <EOL>mcs.have_mcs = int(bits[<NUM_LIT:1>])     <EOL>mcs.have_gi = int(bits[<NUM_LIT:2>])      <EOL>mcs.have_format = int(bits[<NUM_LIT:3>])  <EOL>mcs.have_fec = int(bits[<NUM_LIT:4>])     <EOL>mcs.have_stbc = int(bits[<NUM_LIT:5>])    <EOL>mcs.have_ness = int(bits[<NUM_LIT:6>])    <EOL>mcs.ness_bit1 = int(bits[<NUM_LIT:7>])    <EOL>return idx + <NUM_LIT:3>, mcs<EOL>
strip(3 byte) radiotap.mcs which contains 802.11n bandwidth,
        mcs(modulation and coding scheme) and stbc(space time block coding)
        information.
        :idx: int
        :return: int
            idx
        :return: collections.namedtuple