Remove unnecessary spec_helper requires.
Remove unnecessary spec_helper requires.

These cuke scenarios don't create a spec_helper file.
Instead, the `spec/spec_helper` file (used by rspec-expectations'
specs, but not intended for use by the cukes) was being loaded.
It was causing failures because it disables `should` but I hadn't
gone through the cukes yet.
dg-ratiodata/rspec-expectations,jdax/rspec-expectations,jasonkarns/rspec-expectations,AEgan/rspec-expectations,jamelablack/rspec-expectations,yaoshipu/rspec-expectations,sferik/rspec-expectations,maclover7/rspec-expectations,h4ck3rm1k3/rspec-expectations,edwardpark/rspec-expectations,chrisarcand/rspec-expectations,emilyforst/rspec-expectations,unmanbearpig/rspec-expectations,unmanbearpig/rspec-expectations,jdax/rspec-expectations,sferik/rspec-expectations,zsyed91/rspec-expectations,alexaltair/rspec-expectations,chrisarcand/rspec-expectations,alexaltair/rspec-expectations,rspec/rspec-expectations,bjpcjp/rspec-expectations,danielfone/rspec-expectations,danielfone/rspec-expectations,yaoshipu/rspec-expectations,h4ck3rm1k3/rspec-expectations,edwardpark/rspec-expectations,jasonkarns/rspec-expectations,dg-ratiodata/rspec-expectations,rspec/rspec-expectations,emilyforst/rspec-expectations,jamelablack/rspec-expectations,AEgan/rspec-expectations,maclover7/rspec-expectations,zsyed91/rspec-expectations,bjpcjp/rspec-expectations