Remove bogus require
Remove bogus require

test/unit/assertions was never used by this file

tmornini/rake,envato/rake,ruby/rake,askl56/rake,esasse/rake,Vanzct/rake,ruby/rake,bentley/rake,pjump/rake,codedogfish/rake,ipmobiletech/rake,zzak/rake,taiganakagawa/rake,88rabbit/rake,jaustinhughey/rake,utilum/rake,envato/rake