[service-workers-tests] Remove QueryParams.prefixMatch based on the corresponding spec change (#1664)

This feature was removed in https://github.com/slightlyoff/ServiceWorker/commit/21a6e6.

View on GitHub: https://github.com/w3c/web-platform-tests/pull/1664

Received on Thursday, 5 March 2015 22:23:11 UTC