No.
If it's not marked, there's no need to delete it.
If a mod "stumbles across" a lewd post, then fine, delete it appropriately. But there is absolutely no reason to patrol every single post just..."fishing" for something to mod.
Not changing this sig until Pat Benatar is in Super Smash Bros. (Started 8/31/2010)
BRAVELY DEFAULT: 1075 - 0844 - 9134 + FS: Pumkaboo, Lampent, Dusclops.