How can I bulk delete the profile banner ?

[faker.king]

My profile banner folder consumes around 3GB of size. I would like to delete all profile banners and allow only certain group of users to upload profile banner. In batch update users I can an option to remove avatar, but there is no such option available for profile banners. Any help will be appreciated
How can I bulk delete the profile banner ?

free plugins
minecraft paid for free
mcmarket
mc-market
free minecraft paid plugins
free minecraft plugins
spigotmc
SpigotMC
aac free
ewg free
Minecraft Premium Plugins
ewg free download
litebans free
epicworldgenerator free
free schematics
leaked schematics minecraft
schematics
schematics leaked
schematics free
minecraft schematics free
paid minecraft schematics free
paid minecraft schematics for free
free cracked plugins
free cracked minecraft plugins
plugins
featherboard download
featherboard plugin download
antiaura download
xenforo leaked
xenforo for free
xenforo addons