When updating electron from upstream, revert 7ca2bb5f9ccbbfd

[chase]

See:
electron/electron@7ca2bb5

We tag our releases automatically based on the file, and although it introduces additional commits, the original approach is far more beneficial for us.

[chase]

Another solution is to simply change script/lib/get-version.js to spit out the contents based on the file as before and leave everything else alone.