Updated mediawiki/extensions
Project: mediawiki/extensions/ZeroPortal  ccf3ef5edc8df7b34e0877559e674ab7e7fe16c7

Suppress rm-related cronspam

YuviPanda pointed out cronspam was being generated.
So rather than rm -f, we'll just send rm errors to /dev/null.

Change-Id: I2b59731a55400c32350457ff71931d95dcb98a31