Refactor model glyphs_collection#remove
Refactor model glyphs_collection#remove

Now it compatible with Backbone's prototype

katgironpe/fontello,SKing7/fontellomt,blackgirl/fontello,vinod1988/fontello,CapeSepias/fontello,fontello/fontello,blackgirl/fontello,bartuspan/fontello,CapeSepias/fontello,marcia-kubik/fontello,asrin475/fontello,cnbin/fontello,CapeSepias/fontello,SKing7/fontellomt,cnbin/fontello,liguangmings/fontello,vinod1988/fontello,asrin475/fontello,modulexcite/fontello,blackgirl/fontello,Sivalingaamorthy/fontello,fontello/fontello,bartuspan/fontello,fontello/fontello,modulexcite/fontello,katgironpe/fontello,liguangmings/fontello,vinod1988/fontello,cnbin/fontello,Sivalingaamorthy/fontello,katgironpe/fontello,modulexcite/fontello,bartuspan/fontello,marcia-kubik/fontello,liguangmings/fontello,Sivalingaamorthy/fontello,asrin475/fontello,marcia-kubik/fontello