Generate delta nightly updaters for windows

We've recently updated to electron-winstaller@3.0.4, which includes a
new version of Squirrel.Windows with the following fix:
https://github.com/anaisbetts/NuGet/pull/1

Thanks to that fix we don't need anymore to disable delta nuget
updaters, since that won't fail anymore.

script/lib/create-windows-installer.js

@@ -25,7 +25,6 @@ module.exports = packagedAppPath => {
     ),
     outputDirectory: CONFIG.buildOutputPath,
     noMsi: true,
-    noDelta: CONFIG.channel === 'nightly', // Delta packages are broken for nightly versions past nightly9 due to Squirrel/NuGet limitations
     remoteReleases: `${updateUrlPrefix}/api/updates${archSuffix}?version=${
       CONFIG.computedAppVersion
     }`,