remove error causing dnf config-manager add

[orchard0]

Describe your changes

This PR fixes the issue #3014.

dnf config-manager is useful for adding a remote repo file but the add_rpm_repo function called on line 264 already writes the repo to the appropriate location and therefore when dnf config-manager is ran it raises an error stating that the repo already exists. This causes the script to stop and prevents the installation from completing. Users have found adding --overwrite to dnf config-manager works (#3014 (comment)) but this is unnecessary to begin with.

Issue ticket number and link

#3014.

Stack

Checklist

• Is it a bug fix
• Is a typo/documentation fix
• Is a feature enhancement
• It is a refactor
• Created tests that fail without the change (if possible)
• Extended the README / documentation, if necessary

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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