Removed/simplified redundant code for triggers registration and running.

System version 0.260
modules:
Blogs 0.042
Comments 0.006
Cron 0.004
HybridAuth 2.1.1-cs19
OAuth2 0.013
Static_pages 0.025
plugins:
Admin_default_theme 0.001
TinyMCE 4.0-cs1