delete firebase function
# Delete all functions that match the specified name in all regions.
$ firebase functions:delete myFunction
# Delete a specified function running in a specific region.
$ firebase functions:delete myFunction --region us-east-1
# Delete more than one function
$ firebase functions:delete myFunction myOtherFunction
# Delete a specified functions group.
$ firebase functions:delete groupA
# Bypass the confirmation prompt.
$ firebase functions:delete myFunction --force