Remove incorrect flavor section from metadata action

Author: GeiserX

.github/workflows/main.yml

@@ -84,8 +84,6 @@ jobs:
       uses: docker/metadata-action@v5
       with:
         images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
-        flavor: |
-          suffix=-${{ github.ref_name }}
         tags: |
           type=ref,event=branch
           type=ref,event=pr