Remove revision params from spec x-amples
Remove revision params from spec x-amples

Older revisions are no longer stored in RESTBase, so we want to request
the latest revision in all cases; otherwise tests may time out,
particularly for slower endpoints.

Change-Id: Icbc83cfcfde80c418954cf9720adada71016268c

wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps