Refactor: Remove `$ua`
Refactor: Remove `$ua`

Saves one byte when gzipped

TBRSS/instantclick,TBRSS/instantclick,dieulot/instantclick,alexlur/snap,alexlur/snap,dieulot/instantclick,dieulot/instantclick,misog/instantclick,TBRSS/instantclick,misog/instantclick,alexlur/snap,misog/instantclick,alexlur/snap