chore: packages.json: Remove kdeplasma-addons (already included) (ublue-os#1545)

Author: travier

.github/pull_request_template.md

@@ -2,6 +2,6 @@
 
 ## Thank you for contributing to the Universal Blue project!
 
-Please [read the Contributor's Guide](https://universal-blue.org/CONTRIBUTING/) before submitting a pull request.
+Please [read the Contributor's Guide](https://universal-blue.org/CONTRIBUTING) before submitting a pull request.
 
 -->

packages.json

@@ -72,7 +72,6 @@
 				"libadwaita-qt6",
 				"kde-runtime-docs",
 				"kdenetwork-filesharing",
-				"kdeplasma-addons",
 				"plasma-wallpapers-dynamic"
 			],
 			"dx": [