Remove PEP ToDo file. Tickets are used for further issue tracking.

TODO.pep

-• configure access model when changing it in the combobox
-• PEP in status change
-
-Tune use cases:
-• on disconnection of an account set Tune to None
-
-Tooltips use cases:
-• Show PEP in GC tooltips
-
-Mood/Activity use cases
-• on connection of an account set them to None
-• on disconnection of an account set them to None
-• on explicit set publish them