How do I remove payment details on iphone???

1. For the removing Apple Pay on iPhone open the wallet app on your iPhone.
2. tap on the card you want to remove.
3. tap the 3 dots on the right corner of your screen.
4. Tap card details.
5. Scroll down to the bottom until you see remove card.

to remove it from Apple ID

1. open settings
2. tap on your name
3. Tap payment and delivery
4. Tap edit
5. Now tap on the red minus button to remove you card from iCloud