Core/Misc: Remove unused code

Remove unused debugging code added in MaNGOS r5067.
Remove dead code from a switch found by Coverity.
Core/Unit: prevent COMMAND_ATTACK being added for Trained Rock Falcon.
Also added spells for Trained Rock Falcon to db.
Core/Transports: Fix memory leak on shutdown

Fix world transports not being deleted on shutdown.
DB/Creature: Misc template updates
Merge remote-tracking branch 'TrinityCore/master'