This will remove the block from the region but not permanently delete the block.
- Log in to the Drupal admin interface as an administrator.
- Go to the Structure menu and select Block Layout
- Search or scroll to find the block you with to remove
- Click on the down arrow next to Configure for the block
- Click on Remove
- A warning will be displayed asking if you actually intend to remove the block
- Click Remove if you are ready to remove the block
- Click Cancel if you are unsure for any reason