Remove unnecessary require
Remove unnecessary require

The rake task doesn't use core, and doesn't need the DSL loaded to work.
Having core loaded stomps on minitest if in the same project.

h4ck3rm1k3/rspec-core,rkh/rspec-core,behnaaz/rspec-core,urbanautomaton/rspec-core,leg100/rspec-core,behnaaz/rspec-core,edwardpark/rspec-core,SoldierCoder/rspec-core,avantcredit/rspec-core,avantcredit/rspec-core,azbshiri/rspec-core,edwardpark/rspec-core,yaoshipu/rspec-core,yaoshipu/rspec-core,azbshiri/rspec-core,edwardpark/rspec-core,eugeneius/rspec-core,danascheider/rspec-core,dg-ratiodata/rspec-core,irfanah/rspec-core,eugeneius/rspec-core,maclover7/rspec-core,behnaaz/rspec-core,r7kamura/rspec-core,arronmabrey/rspec-core,irfanah/rspec-core,Teino1978-Corp/Teino1978-Corp-rspec-core,iguchi1124/rspec-core,arronmabrey/rspec-core,leg100/rspec-core,Teino1978-Corp/Teino1978-Corp-rspec-core,a-suenami/rspec-core,xmik/rspec-core,yaoshipu/rspec-core,rspec/rspec-core,avantcredit/rspec-core,urbanautomaton/rspec-core,pandabrand/rspec-core,eugeneius/rspec-core,Teino1978-Corp/Teino1978-Corp-rspec-core,azbshiri/rspec-core,leg100/rspec-core,rspec/rspec-core,r7kamura/rspec-core,pandabrand/rspec-core,maclover7/rspec-core,h4ck3rm1k3/rspec-core,maclover7/rspec-core,arronmabrey/rspec-core,iguchi1124/rspec-core,danascheider/rspec-core,xmik/rspec-core,SoldierCoder/rspec-core,dg-ratiodata/rspec-core,a-suenami/rspec-core,h4ck3rm1k3/rspec-core,iguchi1124/rspec-core,pandabrand/rspec-core,SoldierCoder/rspec-core,rkh/rspec-core,dg-ratiodata/rspec-core,rkh/rspec-core,urbanautomaton/rspec-core,a-suenami/rspec-core,rspec/rspec-core,xmik/rspec-core,danascheider/rspec-core,irfanah/rspec-core