Answer:
If the version is higher than 6.02.0027, you can simply right-click the block(s) you want to delete and select the "Delete" option in the shortcut menu.
Sinon, lorsque vous êtes sur la version 6.02.0027 ou une version précédente la suppression des blocs n'est pas possible directement depuis le Dlubal Center.
However, if you enter wrong input data for a block template, you can delete the template and create a new one.
To do this, go directly to the directory created automatically for the blocks:
C:\Users\User Name\AppData\Local\Dlubal\Dlubal Center\Blocks\user_blocks
