We can easily delete keyboard languages and layouts we no longer need from the Xiaomi smartphone.

Note: Multiple languages/layouts can be selected for deletion or removal.

Android 10 (MIUI 12.0)
Step 1:  Open the  Settings
Step 2:  Tap on  Additional settings
Step 3:  Tap on  Languages & input
Step 4:  Tap on  Manage keyboards
Step 5:  Open the  Settings
Step 6:  Tap on  Languages
Step 7:  Tap on  Edit
Step 8:  Select a  keyboard language
Step 9:  Tap on  Delete
  1. Open the Settings
  2. Tap on Additional settings
  3. Tap on Languages & input
  4. Tap on Manage keyboards
  5. Open the Settings
  6. Tap on Languages
  7. Tap on Edit
  8. Select a keyboard language
  9. Tap on Delete

Xiaomi Instructions