Remove `beginRedirectOut()` from Arcanist
Remove `beginRedirectOut()` from Arcanist

Summary: We always do this on --recon now, see D3213.

Test Plan: Ran `arc diff --background 1` to generate this diff.

Reviewers: vrana

Reviewed By: vrana

CC: aran

Differential Revision: https://secure.phabricator.com/D3241

wharris/arcanist,wikimedia/phabricator-arcanist,jra3/arcanist,PageUpPeopleOrg/arcanist-patches,codelabs-ch/arcanist,dguo-coursera/arcanist,folsom-labs/arcanist,r4nt/arcanist,wharris/arcanist,folsom-labs/arcanist,PageUpPeopleOrg/arcanist-patches,KieranHayes/arcanist,dguo-coursera/arcanist,phacility/arcanist,hach-que/arcanist,calblueprint/arcanist,codelabs-ch/arcanist,codelabs-ch/arcanist,zhihu/arcanist,chundongwang/arcanist,kevinseelbach/arcanist,julkiewicz/arcanist,wikimedia/phabricator-arcanist,uber/arcanist,alexmv/arcanist,wxstars/arcanist,alexmv/arcanist,Symplicity/arcanist,sneakpeeq/arcanist,Khan/arcanist,coursera/arcanist,julkiewicz/arcanist,zhihu/arcanist,Symplicity/arcanist,KieranHayes/arcanist,aik099/arcanist,phacility/arcanist,haskell-infra/arcanist,sneakpeeq/arcanist,jra3/arcanist,wxstars/arcanist,aik099/arcanist,aik099/arcanist,calblueprint/arcanist,r4nt/arcanist,wxstars/arcanist,chundongwang/arcanist,uber/arcanist,Symplicity/arcanist,hach-que/arcanist,memsql/arcanist,calblueprint/arcanist,eSpark/arcanist,wikimedia/phabricator-arcanist,phacility/arcanist,KieranHayes/arcanist,memsql/arcanist,alexmv/arcanist,calblueprint/arcanist,wikimedia/phabricator-arcanist,phacility/arcanist,coursera/arcanist,eSpark/arcanist,Khan/arcanist,zhihu/arcanist,r4nt/arcanist,aik099/arcanist,jra3/arcanist,chundongwang/arcanist,hach-que/arcanist,uber/arcanist,coursera/arcanist,julkiewicz/arcanist,codelabs-ch/arcanist,haskell-infra/arcanist,fivestars/arcanist,PageUpPeopleOrg/arcanist-patches,sneakpeeq/arcanist,haskell-infra/arcanist,r4nt/arcanist,phacility/arcanist,alexmv/arcanist,folsom-labs/arcanist,dguo-coursera/arcanist,Khan/arcanist,kevinseelbach/arcanist,jra3/arcanist,fivestars/arcanist,folsom-labs/arcanist,PageUpPeopleOrg/arcanist-patches,codelabs-ch/arcanist,fivestars/arcanist,zhihu/arcanist,wharris/arcanist,memsql/arcanist,julkiewicz/arcanist,kevinseelbach/arcanist,hach-que/arcanist,coursera/arcanist,uber/arcanist,haskell-infra/arcanist,Khan/arcanist,fivestars/arcanist,Symplicity/arcanist,sneakpeeq/arcanist,wxstars/arcanist,KieranHayes/arcanist,memsql/arcanist,wharris/arcanist,dguo-coursera/arcanist,chundongwang/arcanist,eSpark/arcanist,eSpark/arcanist,kevinseelbach/arcanist