[server] Stop ignoring react-timeago in .flowconfig
[server] Stop ignoring react-timeago in .flowconfig

Summary: Seems to work without issue now.

Test Plan: Flow

Reviewers: atul, palys-swm

Reviewed By: atul

Subscribers: KatPo, zrebcu411, Adrian, subnub

Differential Revision: https://phabricator.ashoat.com/D962

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