Support uninstalling a task from a phase.
Support uninstalling a task from a phase.

Reviewed at https://rbcommons.com/s/twitter/r/879/

slyphon/pants,UnrememberMe/pants,pantsbuild/pants,gmalmquist/pants,peiyuwang/pants,wisechengyi/pants,mateor/pants,di0spyr0s/pants,fkorotkov/pants,benjyw/pants,laurentgo/pants,Gabriel439/pants,tdyas/pants,TansyArron/pants,slyphon/pants,sameerparekh/pants,qma/pants,UnrememberMe/pants,pombredanne/pants,di0spyr0s/pants,lahosken/pants,dbentley/pants,mateor/pants,benjyw/pants,twitter/pants,landism/pants,ity/pants,wisechengyi/pants,pantsbuild/pants,kslundberg/pants,manasapte/pants,twitter/pants,pombredanne/pants,tdyas/pants,fkorotkov/pants,landism/pants,cevaris/pants,twitter/pants,kslundberg/pants,gmalmquist/pants,slyphon/pants,tejal29/pants,tdyas/pants,tdyas/pants,UnrememberMe/pants,qma/pants,twitter/pants,cevaris/pants,dgomez10/xanon,areitz/pants,dturner-tw/pants,dturner-tw/pants,scode/pants,slyphon/pants,foursquare/pants,sameerparekh/pants,wisechengyi/pants,sameerparekh/pants,wisechengyi/pants,kwlzn/pants,cevaris/pants,manasapte/pants,jsirois/pants,qma/pants,lahosken/pants,gmalmquist/pants,jtrobec/pants,TansyArron/pants,dturner-tw/pants,benjyw/pants,UnrememberMe/pants,cevaris/pants,sid-kap/pants,scode/pants,dbentley/pants,baroquebobcat/pants,pombredanne/pants,Gabriel439/pants,megaserg/pants,cevaris/pants,sid-kap/pants,dgomez10/xanon,foursquare/pants,manasapte/pants,pantsbuild/pants,tdyas/pants,jessrosenfield/pants,kwlzn/pants,landism/pants,scode/pants,tejal29/pants,dgomez10/xanon,kslundberg/pants,dbentley/pants,gmalmquist/pants,15Dkatz/pants,landism/pants,dgomez10/xanon,TansyArron/pants,benjyw/pants,lahosken/pants,dbentley/pants,Gabriel439/pants,lahosken/pants,pgroudas/pants,qma/pants,di0spyr0s/pants,wisechengyi/pants,slyphon/pants,wisechengyi/pants,jessrosenfield/pants,dgomez10/xanon,jtrobec/pants,peiyuwang/pants,di0spyr0s/pants,jessrosenfield/pants,manasapte/pants,jessrosenfield/pants,scode/pants,lahosken/pants,dgomez10/xanon,fkorotkov/pants,15Dkatz/pants,lahosken/pants,mateor/pants,di0spyr0s/pants,digwanderlust/pants,foursquare/pants,jtrobec/pants,digwanderlust/pants,kwlzn/pants,baroquebobcat/pants,pgroudas/pants,landism/pants,benjyw/pants,sameerparekh/pants,pantsbuild/pants,ity/pants,tdyas/pants,dbentley/pants,kwlzn/pants,15Dkatz/pants,pgroudas/pants,square/pants,sid-kap/pants,peiyuwang/pants,dgomez10/xanon,tdyas/pants,TansyArron/pants,dturner-tw/pants,dbentley/pants,manasapte/pants,Gabriel439/pants,twitter/pants,pantsbuild/pants,megaserg/pants,mateor/pants,areitz/pants,landism/pants,jessrosenfield/pants,dgomez10/xanon,megaserg/pants,Gabriel439/pants,foursquare/pants,digwanderlust/pants,qma/pants,digwanderlust/pants,dturner-tw/pants,laurentgo/pants,jsirois/pants,foursquare/pants,ity/pants,slyphon/pants,TansyArron/pants,baroquebobcat/pants,baroquebobcat/pants,UnrememberMe/pants,ericzundel/pants,pombredanne/pants,cevaris/pants,square/pants,kslundberg/pants,tejal29/pants,mateor/pants,kslundberg/pants,scode/pants,TansyArron/pants,laurentgo/pants,gmalmquist/pants,areitz/pants,peiyuwang/pants,peiyuwang/pants,peiyuwang/pants,dturner-tw/pants,manasapte/pants,ericzundel/pants,pantsbuild/pants,qma/pants,ity/pants,pgroudas/pants,tdyas/pants,sid-kap/pants,fkorotkov/pants,benjyw/pants,baroquebobcat/pants,tdyas/pants,pombredanne/pants,dturner-tw/pants,pombredanne/pants,pantsbuild/pants,fkorotkov/pants,di0spyr0s/pants,ericzundel/pants,baroquebobcat/pants,gmalmquist/pants,cevaris/pants,15Dkatz/pants,pgroudas/pants,dbentley/pants,mateor/pants,Gabriel439/pants,areitz/pants,laurentgo/pants,kwlzn/pants,qma/pants,foursquare/pants,square/pants,slyphon/pants,dgomez10/xanon,UnrememberMe/pants,jtrobec/pants,scode/pants,manasapte/pants,twitter/pants,jessrosenfield/pants,sid-kap/pants,ity/pants,kslundberg/pants,sameerparekh/pants,megaserg/pants,ericzundel/pants,pgroudas/pants,digwanderlust/pants,wisechengyi/pants,baroquebobcat/pants,ericzundel/pants,square/pants,megaserg/pants,fkorotkov/pants,sameerparekh/pants,Gabriel439/pants,peiyuwang/pants,areitz/pants,15Dkatz/pants,UnrememberMe/pants,jessrosenfield/pants,megaserg/pants,jtrobec/pants,areitz/pants,ity/pants,jtrobec/pants,scode/pants,peiyuwang/pants,landism/pants,jsirois/pants,digwanderlust/pants,lahosken/pants,di0spyr0s/pants,tejal29/pants,sid-kap/pants,laurentgo/pants,fkorotkov/pants,foursquare/pants,fkorotkov/pants,foursquare/pants,mateor/pants,sameerparekh/pants,baroquebobcat/pants,15Dkatz/pants,baroquebobcat/pants,lahosken/pants,UnrememberMe/pants,dgomez10/xanon,dgomez10/xanon,tejal29/pants,kwlzn/pants,15Dkatz/pants,kslundberg/pants,areitz/pants,15Dkatz/pants,ity/pants,jtrobec/pants,pombredanne/pants,wisechengyi/pants,twitter/pants,TansyArron/pants,ericzundel/pants,twitter/pants,laurentgo/pants,ericzundel/pants,benjyw/pants,UnrememberMe/pants,twitter/pants,gmalmquist/pants,wisechengyi/pants,sid-kap/pants,landism/pants,ericzundel/pants,megaserg/pants,foursquare/pants,kwlzn/pants,mateor/pants