[cleanup] Move ReactStateSetters inside of addons/link (#7085)

Summary:
The only callsite of ReactStateSetters is in LinkedStateMixin which lives in addons/link. Better move it there to avoid cluttering the other folder.

Test Plan:
None

Reviewers: @zpao @spicyj
(cherry picked from commit b0732ef881)
This commit is contained in:
Christopher Chedeau
2016-06-21 16:09:09 +02:00
committed by Paul O’Shannessy
parent eb9f4efde7
commit ba6ca7ff71