docs(README): removes gotcha that sections wouldn't work (#214)

## Description

- removes gotcha that sections wouldn't work

## Motivation and Context

ain't true anymore 

## How Has This Been Tested?

- [x] green ci


## Types of changes

- [ ] Bug fix (non-breaking change which fixes an issue)
- [x] Documentation only change
- [ ] Refactor (non-breaking change which fixes an issue without
changing functionality)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)

README.md

@@ -144,9 +144,6 @@ libs/baarden/       [email protected] [email protected] [email protected] tjorus@
 ### Any gotcha's?
 
 - It won't check whether the users or teams you entered exist.
-- Only relevant when you're on GitLab: Section heading support is experimental
-  and when generating labeler.yml default section owners aren't expanded to
-  section rules.
 
 ### Do I have to run this each time I edit `VIRTUAL-CODEOWNERS.txt`?