Remove unused method get_current_due_date from assignment.rb.
Remove unused method get_current_due_date from assignment.rb.

expertiza/expertiza,michaelamoran/expertiza,ApertureScienceInnovators/expertiza,michaelamoran/expertiza,arpitashekhar/expertiza,kira0992/expertiza,mhhassan/expertiza,urmilparikh95/expertiza,akshayjain114/expertiza,joshio1/expertiza,joshio1/expertiza,rmmaily/expertiza,sid5788/expertiza,akshayjain114/expertiza,arpitashekhar/expertiza,mhhassan/expertiza,michaelamoran/expertiza,ApertureScienceInnovators/expertiza,joshio1/expertiza,rmmaily/expertiza,akshayjain114/expertiza,mhhassan/expertiza,ApertureScienceInnovators/expertiza,expertiza/expertiza,rmmaily/expertiza,kira0992/expertiza,arpitashekhar/expertiza,redsock88/expertiza,joshio1/expertiza,sid5788/expertiza,redsock88/expertiza,sid5788/expertiza,urmilparikh95/expertiza,KunmiaoYang/expertiza,sid5788/expertiza,expertiza/expertiza,redsock88/expertiza,michaelamoran/expertiza,redsock88/expertiza,mhhassan/expertiza,kira0992/expertiza,KunmiaoYang/expertiza,kira0992/expertiza,arpitashekhar/expertiza,urmilparikh95/expertiza,ApertureScienceInnovators/expertiza,expertiza/expertiza,urmilparikh95/expertiza,rmmaily/expertiza,KunmiaoYang/expertiza,KunmiaoYang/expertiza,akshayjain114/expertiza