Supress Warning: filemtime(): stat failed for sites/all/modules/horizon_realtime/less/realtime.less in less_check_for_less() (line 33 of /home/geusebio/Projects/Horizon/Horizon_Web/sites/all/modules/less/less.module).

part of #1600
Supress Warning: filemtime(): stat failed for sites/all/modules/horizon_realtime/less/realtime.less in less_check_for_less() (line 33 of /home/geusebio/Projects/Horizon/Horizon_Web/sites/all/modules/less/less.module).
         part of #1600