Revisit TODO in match2ref

[pllim]

I stumbled upon this

tweakwcs/tweakwcs/wcsimage.py

Lines 1017 to 1029 in 4ddf4b1

	# TODO: revisit this once the bug described in
	# https://github.com/spacetelescope/stsci.stimage/issues/8
	# is fixed.
	#
	# Due to this bug minput_idx may contain duplicate values.
	# Because of this, the above logic for masking, saving ids, and indices
	# does not work reliably. As a workaround, we save matched array
	# indices within the image catalog so that we can use them in
	# `fit2ref()`. For this to work, reference and image catalog must not
	# change between this function return and `fit2ref()` call.
	#
	self._mref_idx = mref_idx
	self._minput_idx = minput_idx

And see that this reference issue is resolved upstream

• Possible bug in xyxymatch resulting in duplicate matches stsci.stimage#8