Updating st2api/controllers/v1/actions.py
Updating st2api/controllers/v1/actions.py

Moving path calculations and action file remove related code to st2common/services/packs.py
nzlosh/st2,StackStorm/st2,Plexxi/st2,Plexxi/st2,StackStorm/st2,StackStorm/st2,nzlosh/st2,StackStorm/st2,nzlosh/st2,nzlosh/st2,Plexxi/st2,Plexxi/st2