[Delete Library] (Extensions menu)

In the Epson RC+ 8.0 menu, select [Extensions]-[Delete Library] to open the [Delete Library] dialog box. Select the library you want to delete in the [Delete Library] dialog box to remove the library from RC+. For details, refer to the following manual:

"Epson RC+ 8.0 Extension Library Builder 8.0 - Using Libraries - Delete Library"