Restrict Torbutton signing exemption to mobile

In #27220 (moved) we made sure our Torbutton can be installed into Tor Browser for Android. The patch for that is not needed for desktop. We should clean it up accordingly.

added TorBrowserTeam201809R component::applications/tor browser owner::tbb-team priority::very high resolution::fixed severity::normal status::closed type::defect labels

Fixed with commit d53c662d2fbb8053908ba776a2dbddd4f9817d4f on tor-browser-60.2.0esr-8.5-1 and with commit ba30179040d81bdd4e326c710d7893eeb8c2a8c6 on tor-browser-60.2.0esr-8.0-1. mcs: Thanks for the review.

Trac:
Status: new to closed
Cc: N/A to mcs, brade
Keywords: N/A deleted, TorBrowserTeam201809R added
Resolution: N/A to fixed

Thanks to Alex Catarineu for reporting this mistake.

Trac:
Priority: Medium to Very High

closed

mentioned in issue #28640 (moved)

moved to tpo/applications/tor-browser#27763 (closed)