Open Messages
Open a conversation
Tap the App Store icon next to the text field
Tap the sticker icon
Press and hold the sticker
Tap Remove or Delete
Confirm the removal if prompted
To hide a sticker app, swipe left on the app in the app drawer
Tap Hide or Delete
To remove a sticker pack from iMessage apps, go to the App Store
Tap your profile icon
Tap Purchased
Find the sticker app
Tap Delete or Hide
To remove a sticker from a photo or note, use the app’s undo or delete option if available