Remove extra semicolons.

[XhmikosR]

'build.js' has extra semicolons, remove them together.

[Trott]

standard --fix which runs on npm t doesn't fail if it can fix the issues. This is another reason to separate the npm scripts...

Wand to include the fix to package.json here as a second commit so that more things like this don't creep in?

[XhmikosR]

@Trott I believe this should be handled in a separate PR, see #2463. It's already pretty troublesome developing, let alone that we have npm t in a precommit hook which slows down things a lot...