[Linaro-validation] what's this thing do?

I got mad at some ugly code today in LAVA's master.py, while cleaning it up, I noticed an awkward line of code in our _update_uInitrd_partitions function:

session.run( 'sed -i "//dev/block/mmcblk0p%s/d" %s' % (cache_part_org, rc_filename), failok=True)

This seems like its just junk and can be removed. Before I start testing the removal of it, I thought I'd check and see if anyone can say why I shouldn't?

-andy