removed unused variable _connect_callback
removed unused variable _connect_callback

adozenlines/strophejs,sualko/strophejs,processone/strophejs,Rom4eg/strophejs,m800-limited/strophejs,m800-limited/strophejs,joachimlindborg/strophejs,processone/strophejs,Rom4eg/strophejs,teambox/strophejs,Voiceworks/strophejs,Voiceworks/strophejs,sualko/strophejs,ggozad/strophejs,diegocr/strophejs,diegocr/strophejs,teambox/strophejs,damencho/strophejs,minddistrict/strophejs,damencho/strophejs,minddistrict/strophejs,strophe/strophejs,strophe/strophejs,processone/strophejs,damencho/strophejs,strophe/strophejs,minddistrict/strophejs,ggozad/strophejs,teambox/strophejs,Voiceworks/strophejs,sualko/strophejs,Rom4eg/strophejs,diegocr/strophejs,adozenlines/strophejs,ggozad/strophejs,m800-limited/strophejs,adozenlines/strophejs,joachimlindborg/strophejs,joachimlindborg/strophejs