New in version 2.1.
Detach instrument marks attached to component:
abjad> staff = Staff("c'4 d'4 e'4 f'4")
abjad> instrument_mark = contexttools.InstrumentMark('Violin ', 'Vn. ')
abjad> instrument_mark.attach(staff)
InstrumentMark(instrument_name='Violin ', short_instrument_name='Vn. ')(Staff{4})
abjad> f(staff)
\new Staff {
\set Staff.instrumentName = \markup { Violin }
\set Staff.shortInstrumentName = \markup { Vn. }
c'4
d'4
e'4
f'4
}
abjad> contexttools.detach_instrument_marks_attached_to_component(staff)
(InstrumentMark(instrument_name='Violin ', short_instrument_name='Vn. '),)
abjad> f(staff)
\new Staff {
c'4
d'4
e'4
f'4
}
Return tuple of zero or more instrument marks.