New in version 2.0.
Remove sequence elements at indices mod period plus offset:
abjad> from abjad.tools import sequencetools
abjad> sequencetools.remove_sequence_elements_at_indices_cyclically(range(20), [0, 1], 5, 3)
[0, 1, 2, 5, 6, 7, 10, 11, 12, 15, 16, 17]
Ignore negative indices.
Return list.