remove mobile1001-1004 from site.pp - unused

"mobile1001-1003 aren't in use for mobile anymore"

RT #5847: remove label from wmf3407-3409 / mobile1001-1003

RT #6350: reclaim mobile1004, 1005

Change-Id: I9f661031e9cbac36e1ffb4c5e44312e500dc8532
Merge "remove mobile1001-1004 from site.pp - unused" into production