deprecate/nuke rodent

Posted under Tags

BUR #16437 has been approved by @nonamethanks.

deprecate rodent
nuke rodent

it's a pointless bloat tag, which is emphasized by the fact that capybara outnumbers rodent over 7 to 1, which shows that when people are searching for rodents, they aren't searching for any kind of rodent, they are searching/tagging for a particular kind