fix whitespace in workerpool test, rm unused import
fix whitespace in workerpool test, rm unused import

address Stu's comment.

Testing Done:
reran worker pool tests.

Reviewed at https://rbcommons.com/s/twitter/r/2144/

twitter/pants,landism/pants,sameerparekh/pants,tdyas/pants,kwlzn/pants,dbentley/pants,tdyas/pants,tdyas/pants,twitter/pants,fkorotkov/pants,pombredanne/pants,areitz/pants,mateor/pants,mateor/pants,15Dkatz/pants,foursquare/pants,kslundberg/pants,lahosken/pants,sameerparekh/pants,megaserg/pants,landism/pants,dturner-tw/pants,qma/pants,sid-kap/pants,twitter/pants,sid-kap/pants,sid-kap/pants,megaserg/pants,pantsbuild/pants,ity/pants,digwanderlust/pants,wisechengyi/pants,pgroudas/pants,scode/pants,benjyw/pants,fkorotkov/pants,pgroudas/pants,landism/pants,foursquare/pants,mateor/pants,benjyw/pants,jtrobec/pants,manasapte/pants,manasapte/pants,dturner-tw/pants,twitter/pants,gmalmquist/pants,gmalmquist/pants,cevaris/pants,UnrememberMe/pants,pantsbuild/pants,ity/pants,di0spyr0s/pants,gmalmquist/pants,areitz/pants,mateor/pants,baroquebobcat/pants,landism/pants,tdyas/pants,twitter/pants,UnrememberMe/pants,slyphon/pants,TansyArron/pants,ity/pants,pantsbuild/pants,ity/pants,di0spyr0s/pants,jtrobec/pants,manasapte/pants,15Dkatz/pants,15Dkatz/pants,manasapte/pants,sid-kap/pants,TansyArron/pants,twitter/pants,ity/pants,twitter/pants,kwlzn/pants,areitz/pants,dturner-tw/pants,slyphon/pants,TansyArron/pants,mateor/pants,areitz/pants,pombredanne/pants,manasapte/pants,dturner-tw/pants,laurentgo/pants,scode/pants,wisechengyi/pants,foursquare/pants,jessrosenfield/pants,scode/pants,dbentley/pants,jessrosenfield/pants,cevaris/pants,di0spyr0s/pants,sameerparekh/pants,UnrememberMe/pants,laurentgo/pants,mateor/pants,Gabriel439/pants,15Dkatz/pants,jessrosenfield/pants,slyphon/pants,jessrosenfield/pants,megaserg/pants,tdyas/pants,foursquare/pants,ericzundel/pants,benjyw/pants,qma/pants,scode/pants,pombredanne/pants,jtrobec/pants,di0spyr0s/pants,ericzundel/pants,pombredanne/pants,peiyuwang/pants,gmalmquist/pants,wisechengyi/pants,15Dkatz/pants,peiyuwang/pants,peiyuwang/pants,twitter/pants,Gabriel439/pants,benjyw/pants,lahosken/pants,pantsbuild/pants,ity/pants,foursquare/pants,cevaris/pants,laurentgo/pants,fkorotkov/pants,wisechengyi/pants,kwlzn/pants,jtrobec/pants,sid-kap/pants,Gabriel439/pants,digwanderlust/pants,sameerparekh/pants,sameerparekh/pants,jtrobec/pants,15Dkatz/pants,benjyw/pants,jtrobec/pants,manasapte/pants,ericzundel/pants,fkorotkov/pants,megaserg/pants,dbentley/pants,fkorotkov/pants,foursquare/pants,Gabriel439/pants,UnrememberMe/pants,areitz/pants,megaserg/pants,ericzundel/pants,baroquebobcat/pants,baroquebobcat/pants,jsirois/pants,qma/pants,sid-kap/pants,ericzundel/pants,jessrosenfield/pants,pombredanne/pants,UnrememberMe/pants,cevaris/pants,qma/pants,pantsbuild/pants,kwlzn/pants,slyphon/pants,UnrememberMe/pants,baroquebobcat/pants,wisechengyi/pants,cevaris/pants,kslundberg/pants,di0spyr0s/pants,lahosken/pants,scode/pants,digwanderlust/pants,pgroudas/pants,Gabriel439/pants,scode/pants,baroquebobcat/pants,slyphon/pants,baroquebobcat/pants,peiyuwang/pants,digwanderlust/pants,lahosken/pants,lahosken/pants,cevaris/pants,laurentgo/pants,fkorotkov/pants,pgroudas/pants,lahosken/pants,pombredanne/pants,benjyw/pants,jsirois/pants,pantsbuild/pants,cevaris/pants,slyphon/pants,dturner-tw/pants,UnrememberMe/pants,landism/pants,tdyas/pants,peiyuwang/pants,megaserg/pants,sameerparekh/pants,baroquebobcat/pants,UnrememberMe/pants,15Dkatz/pants,ity/pants,wisechengyi/pants,peiyuwang/pants,laurentgo/pants,baroquebobcat/pants,kslundberg/pants,kslundberg/pants,kslundberg/pants,kslundberg/pants,ericzundel/pants,di0spyr0s/pants,dbentley/pants,digwanderlust/pants,TansyArron/pants,wisechengyi/pants,qma/pants,jessrosenfield/pants,wisechengyi/pants,kwlzn/pants,qma/pants,tdyas/pants,benjyw/pants,pantsbuild/pants,lahosken/pants,tdyas/pants,jessrosenfield/pants,jtrobec/pants,laurentgo/pants,TansyArron/pants,scode/pants,slyphon/pants,baroquebobcat/pants,di0spyr0s/pants,dbentley/pants,gmalmquist/pants,UnrememberMe/pants,dturner-tw/pants,peiyuwang/pants,kwlzn/pants,landism/pants,kslundberg/pants,sid-kap/pants,Gabriel439/pants,pombredanne/pants,lahosken/pants,landism/pants,foursquare/pants,ericzundel/pants,mateor/pants,fkorotkov/pants,areitz/pants,wisechengyi/pants,manasapte/pants,dturner-tw/pants,TansyArron/pants,TansyArron/pants,areitz/pants,kwlzn/pants,landism/pants,dbentley/pants,foursquare/pants,ericzundel/pants,gmalmquist/pants,dbentley/pants,pgroudas/pants,qma/pants,peiyuwang/pants,gmalmquist/pants,15Dkatz/pants,mateor/pants,sameerparekh/pants,jsirois/pants,fkorotkov/pants,digwanderlust/pants,twitter/pants,megaserg/pants,foursquare/pants,Gabriel439/pants,pgroudas/pants,tdyas/pants