refactor: remove unused primer experimental (#2406) #1914

Job	Run time
Prepare CI	3s
Lint App / biomejs	18s
Tests / Run Tests	3m 15s
Tests / SonarQube Cloud Analysis	1m 22s
Build / Build macOS (electron-builder)	4m 12s
Build / Build Windows (electron-builder)	2m 52s
Build / Build Linux (electron-builder)	4m 23s
	16m 25s

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