Ref 65a66489: oldIE handholding for native event tests
Fix #13539: Utilize Sizzle hooks. Close gh-1215.
No ticket: minor 1.x/2.x code standardization
Fix #13721. Filter before .remove() loop so positionals work. Close gh-1221.

(Cherry picked from 1b610266502490eab42a0b9ddfac2f93da0b0fe1)
Fix indentation issue with last cherry-pick.