Remove maintainer option from the Linux build json file

[GedasGa]

Platforms affected

electron

Motivation and Context

Remove the maintainer option build/linux.json, as maintainer and vendor defaults to the author value set in the {project_root}/platforms/electron/www/package.json. I believe it's unnecessary to get the option from the package.json file and then manually append it to the build/linux.json file.

Testing

Built all available packages for Linux. As well, ran npm t.

Checklist

• I've run the tests to see all new and existing tests pass
• I added automated test coverage as appropriate for this change
• Commit is prefixed with (platform) if this change only applies to one platform (e.g. (android))
• If this Pull Request resolves an issue, I linked to the issue in the text above (and used the correct keyword to close issues using keywords)
• I've updated the documentation if necessary

[codecov-io]

Codecov Report

Merging #57 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master    #57   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files          14     14           
  Lines         569    569           
=====================================
  Hits          569    569

Impacted Files	Coverage Δ
bin/templates/cordova/lib/build.js	100% <ø> (ø)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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[codecov-io]

Codecov Report

Merging #57 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master    #57   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files          14     14           
  Lines         569    569           
=====================================
  Hits          569    569

Impacted Files	Coverage Δ
bin/templates/cordova/lib/build.js	100% <ø> (ø)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 9bf4945...bf3a30f. Read the comment docs.

[erisu]

👍
This is safe for minor release. It does not break an existing project with past releases. It prepares for fixing a known issue.