There are various ways in which you can remove a field from a format, as listed below.
Field controls can be removed from a format in one of three ways.
del (or Delete key). Deletes the selected field(s).
Edit - Delete. Deletes the selected field(s) without being copied to the clipboard.
Edit - Cut (Ctrl+X). Deletes the selected field(s) after being copied to the clipboard. You can now click on another format and select Edit - Paste (or Ctrl+V). The field(s) previously deleted will appear in the left hand corner of the format. Drag and drop this field(s) into the desired position.
You can remove multiple fields by:
Note To restore deleted fields to their original state, select Edit - Undo (or Ctrl+Z).
Working with Fields Controls | Adding a Field | Setting Properties