[CLOSED] Remove `brackets.app.abortQuit` checks

[core-ai-bot]

Issue by le717
Monday May 19, 2014 at 21:00 GMT
Originally opened as adobe/brackets#7885

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Removes the two year old brackets.app.abortQuit checks added before the switch to the CEF3 shell. Fixes #7883.

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le717 included the following code: https://github.com/adobe/brackets/pull/7885/commits