Remove this non-standard utility method, which was only used in
ResourceLoader's own test suites to avoid cache hits.
* mediawiki.base: Wasn't ever needed afaik. I believe this was added
by me out of fear that maybe if we use the same internal script URL
twice that it wouldn't be loaded a second time due to some deduplication
logic, however no such logic does (nor should) exist at this level.
There is something like it in legacy wikibits (importScriptURL),
and of course the module-level resources are deduped and never
loaded or executed a second time. But internal asset URLs will
run no matter what.
* mediawiki.loader: The styleTest.css.php mock doesn't change often,
but it is indeed useful during development to not get caught with
a cached response prior to making a local change. Handle this on
the server-side instead of through randomised URLs.
Tagging T250045 as this is in spirit related to the effort of making
the testrunner.js environment simpler and with fewer custom things.
Bug: T250045
Change-Id: I6813a7429fb503d8dbcb1861f311e4b40c615b9d
2e80fcfc16