ci: separate flatpak job

Signed-off-by: Seth Flynn <getchoo@tuta.io>

.github/workflows/build.yml

@@ -628,41 +628,3 @@ jobs:
         shell: msys2 {0}
         run: |
           ccache -s
-
-  flatpak:
-    name: Flatpak (${{ matrix.arch }})
-
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          - os: ubuntu-22.04
-            arch: x86_64
-
-          - os: ubuntu-22.04-arm
-            arch: aarch64
-
-    runs-on: ${{ matrix.os }}
-
-    container:
-      image: ghcr.io/flathub-infra/flatpak-github-actions:kde-6.8
-      options: --privileged
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-        if: inputs.build_type == 'Debug'
-        with:
-          submodules: true
-
-      - name: Set short version
-        shell: bash
-        run: echo "VERSION=${GITHUB_SHA::7}" >> $GITHUB_ENV
-
-      - name: Build Flatpak (Linux)
-        if: inputs.build_type == 'Debug'
-        uses: flatpak/flatpak-github-actions/flatpak-builder@v6
-        with:
-          bundle: PrismLauncher-${{ runner.os }}-${{ env.VERSION }}-Flatpak.flatpak
-          manifest-path: flatpak/org.prismlauncher.PrismLauncher.yml
-          arch: ${{ matrix.arch }}