Can lalinference/tiger/batch_proc.py be removed?

@tjonnie.li, @michalis-agathos, you are marked as the authors of the lalinference.tiger.batch_proc python module. This file is causing test failures because it is incompatible with newer versions of matplotlib. However, the module isn't actually part of the package, i.e. it is not declared in the Makefile.am to be installed.

Can this file be removed?