Remove src and src-gen from classpath of ant-built buck
Remove src and src-gen from classpath of ant-built buck

Summary: This is to reduce the amount of files on buck classpath.

Test Plan: CI and local testing

Reviewed By: ttsugriy

fbshipit-source-id: 59dc119

rmaz/buck,nguyentruongtho/buck,Addepar/buck,brettwooldridge/buck,brettwooldridge/buck,brettwooldridge/buck,brettwooldridge/buck,romanoid/buck,romanoid/buck,JoelMarcey/buck,SeleniumHQ/buck,zpao/buck,ilya-klyuchnikov/buck,rmaz/buck,ilya-klyuchnikov/buck,rmaz/buck,facebook/buck,LegNeato/buck,shs96c/buck,romanoid/buck,LegNeato/buck,facebook/buck,LegNeato/buck,SeleniumHQ/buck,shs96c/buck,rmaz/buck,LegNeato/buck,LegNeato/buck,ilya-klyuchnikov/buck,brettwooldridge/buck,JoelMarcey/buck,ilya-klyuchnikov/buck,rmaz/buck,Addepar/buck,shs96c/buck,facebook/buck,ilya-klyuchnikov/buck,shs96c/buck,brettwooldridge/buck,SeleniumHQ/buck,rmaz/buck,Addepar/buck,romanoid/buck,romanoid/buck,LegNeato/buck,kageiit/buck,ilya-klyuchnikov/buck,clonetwin26/buck,SeleniumHQ/buck,SeleniumHQ/buck,kageiit/buck,shs96c/buck,LegNeato/buck,Addepar/buck,LegNeato/buck,Addepar/buck,zpao/buck,kageiit/buck,JoelMarcey/buck,rmaz/buck,rmaz/buck,Addepar/buck,facebook/buck,Addepar/buck,JoelMarcey/buck,SeleniumHQ/buck,rmaz/buck,facebook/buck,JoelMarcey/buck,JoelMarcey/buck,brettwooldridge/buck,SeleniumHQ/buck,brettwooldridge/buck,kageiit/buck,clonetwin26/buck,brettwooldridge/buck,kageiit/buck,facebook/buck,ilya-klyuchnikov/buck,zpao/buck,kageiit/buck,romanoid/buck,ilya-klyuchnikov/buck,JoelMarcey/buck,clonetwin26/buck,romanoid/buck,ilya-klyuchnikov/buck,brettwooldridge/buck,clonetwin26/buck,romanoid/buck,shs96c/buck,shs96c/buck,JoelMarcey/buck,rmaz/buck,SeleniumHQ/buck,romanoid/buck,JoelMarcey/buck,romanoid/buck,LegNeato/buck,romanoid/buck,romanoid/buck,brettwooldridge/buck,clonetwin26/buck,JoelMarcey/buck,SeleniumHQ/buck,Addepar/buck,ilya-klyuchnikov/buck,kageiit/buck,brettwooldridge/buck,LegNeato/buck,clonetwin26/buck,brettwooldridge/buck,clonetwin26/buck,LegNeato/buck,rmaz/buck,ilya-klyuchnikov/buck,nguyentruongtho/buck,zpao/buck,SeleniumHQ/buck,shs96c/buck,Addepar/buck,clonetwin26/buck,shs96c/buck,facebook/buck,clonetwin26/buck,romanoid/buck,rmaz/buck,JoelMarcey/buck,nguyentruongtho/buck,LegNeato/buck,rmaz/buck,shs96c/buck,SeleniumHQ/buck,nguyentruongtho/buck,Addepar/buck,JoelMarcey/buck,JoelMarcey/buck,SeleniumHQ/buck,LegNeato/buck,clonetwin26/buck,Addepar/buck,shs96c/buck,nguyentruongtho/buck,ilya-klyuchnikov/buck,zpao/buck,shs96c/buck,nguyentruongtho/buck,Addepar/buck,zpao/buck,zpao/buck,clonetwin26/buck,ilya-klyuchnikov/buck,Addepar/buck,SeleniumHQ/buck,clonetwin26/buck,nguyentruongtho/buck,clonetwin26/buck,shs96c/buck