Remove request context enable flag
Summary:
Originally meant as a kill switch. It's turned on in everything except adfinder, so we can probably remove this flag after running a couple adfinder canaries
I have no idea who should review this in ads team, guessed and added some people
Test Plan: https://our.intern.facebook.com/intern/tupperware/canary/view/?experiment_id=32937
Reviewed By: haijunz@fb.com
Subscribers: trunkagent, doug, ruibalp, nli, alandau, bmatheny, wormhole-diffs@, mshneer, folly-diffs@
FB internal diff:
D1809255
Tasks:
5645329
Signature: t1:
1809255:
1422490068:
5b4551e6c126d86cac8f8e7b06da6474e6b8a25a