Incorrectly created or superfluous access points can be deleted via the menu on the Samsung device, but randomly, APN data should not be removed from the device as it is required for Internet, SMS and MMS use.

Android 10 (One UI 2.0)
Step 1:  Open the  Settings
Step 2:  Tap on  Connections
Step 3:  Tap on  Mobile networks
Step 4:  Tap on  Access Point Names
Step 5:  Tap on  APN  you want
Step 6:  Open the  menu
Step 7:  Tap on  Delete APN
  1. Open the Settings
  2. Tap on Connections
  3. Tap on Mobile networks
  4. Tap on Access Point Names
  5. Tap on APN you want
  6. Open the menu
  7. Tap on Delete APN

Samsung Instructions