delete the noc.wikimedia.org SSL cert

not used anymore since I58ff78ef84861baff63f1
and I20a7025a1c899b0

RT: 8497
RT: 8560

make sure to also remove the key from private
repo and nuke/shred it from all places

Change-Id: If0366b9ec06acbe20e8f13903221114aa810aad5
Merge "delete the noc.wikimedia.org SSL cert" into production