Update docs/participate/network-maintenance/single-nominator.mdx

Co-authored-by: Maksim Kurbatov <94808996+yungwine@users.noreply.github.com>

Author: gleb498

docs/participate/network-maintenance/single-nominator.mdx

@@ -391,9 +391,6 @@ You can confirm if your node has become a full validator by checking the followi
 1. **Validator Efficiency** - An efficiency of the local validator should be green and not `n/a`.
 2. **Validator Index** - The validator index should be greater than -1.
 
-Find your node as potential validator under **Validator Index** by checking the Validators List with `vl` command:
-
-![](/img/docs/single-nominator/vl-activated.png)
 
 ### Checking profit