[V1] likely broken import of XPCS_XSVS_SAXS_Multi_2017_V4 - obsolete? can delete?

[ambarb]

pyCHX/pyCHX/XPCS_XSVS_SAXS_Multi_2017_V4.py

Line 5 in 6e991bb

from pyCHX.chx_xpcs_xsvs_jupyter import run_xpcs_xsvs_single

Show it relies on a function from a package that does not exist. should import as

from pyCHX.chx_xpcs_xsvs_jupyter_V1 import run_xpcs_xsvs_single 

I did not discover in V1 (pyCHX), but found this to be the case in the default copies of V2 (pyCHX.v2._commonspeckle).

Is this module XPCS_XSVS_SAXS_Multi_2017_V4 still requiring use or can it be deleted because it is obsolete?
If still required, then we can discuss further

[ambarb]

@afluerasu believes this is obsolete but will check