Remove the fortigate integration

[kifeo]

Proposed change

remove the fortigate integration

Type of change

• Spelling, grammar or other readability improvements (current branch).
• Adjusted missing or incorrect information in the current documentation (current branch).
• Added documentation for a new integration I'm adding to Home Assistant (next branch).
  • I've opened up a PR to add logo's and icons in Brands repository.
• Added documentation for a new feature I'm adding to Home Assistant (next branch).
• Removed stale or deprecated documentation.

Additional information

• Link to parent pull request in the codebase: Remove fortigate integration core#34586
• Link to parent pull request in the Brands repository:
• This PR fixes or closes issue:

Checklist

• This PR uses the correct branch, based on one of the following:
  • I made a change to the existing documentation and used the current branch.
  • I made a change that is related to an upcoming version of Home Assistant and used the next branch.
• The documentation follows the Home Assistant documentation standards.

[klaasnicolaas]

@kifeo Can you fix the merge conflict? Also it's not necessary to remove a line from CODEOWNERS, because it's auto generated 😉

[kifeo]

@klaasnicolaas I messed up with e1dcd8d, but cannot find how to resolve ?

[frenck]

I've rebased it, but now I notice it is removing the wrong integration.
Will close this one up and create a new PR.