Remove `dirty` data for `EnhancedLightsandFX.esp`.

ITMs etc. were found with a development version of TES5Edit and thus
won't be able to be fixed by users using the latest
stable/"experimental" version. Resolution is to remove for now and
re-add once TES5Edit 3.0.33 is released.

Arthmoor's original report: loot/skyrim#43
Added with commit 352245f.
First reported:
  http://forums.bethsoft.com/topic/1504835-rel-loot-thread-11/page-2#entry23722153
Arthmoor explains using dev. version of TES5Edit:
  http://forums.bethsoft.com/topic/1504835-rel-loot-thread-11/page-3#entry23725056
Reported again:
  http://forums.bethsoft.com/topic/1504835-rel-loot-thread-11/page-4#entry23734293
Arthmoor suggests removing for now:
  http://forums.bethsoft.com/topic/1504835-rel-loot-thread-11/page-4#entry23734302