2.3.2.7 The Shortcut Menu of a Block Output
If you click with the right mouse button on the output of a block, you will receive the shortcut menu of the block output. In this menu you can

In addition to the shortcut menu of a block (2.3.2.6 The Shortcut Menu of a Block), you can use "Delete link" to delete only the link assigned to this output and keep the block.