You can remove a logical formfile with toolkit as follows:
Start toolkit on your database:
c:\> toolkit dbname
Select 2 - Data Entry Forms Menu from the Toolkit Development Menu.
Select M2 - Remove Data Entry Form from the Data Entry Forms Menu.
Enter the logical formfile name and press STORE <F5> to remove the file, or CANCEL <F1>-X to return without removing the file.
To remove a logical formfile with a command, enter:
c:\> formrm -v lfname
Lfname is the name of the logical formfile to remove.