ci: Kill remaining qt6-v2 references

.github/workflows/docker.yml

@@ -18,9 +18,6 @@ jobs:
           - archlinux-webengine-qt6
     steps:
       - uses: actions/checkout@v3
-        with:
-          # FIXME:qt6 remove again once merged
-          ref: ${{ matrix.image == 'archlinux-webengine-qt6' && 'qt6-v2' || '' }}
       - uses: actions/setup-python@v4
         with:
           python-version: '3.x'

.github/workflows/nightly.yml

@@ -46,22 +46,18 @@ jobs:
             name: windows-32bit-debug
 
           - os: macos-11
-            branch: qt6-v2
             toxenv: build-release-qt6
             name: qt6-macos
           - os: windows-2019
             args: --64bit
-            branch: qt6-v2
             toxenv: build-release-qt6
             name: qt6-windows-64bit
           - os: macos-11
             args: --debug
-            branch: qt6-v2
             toxenv: build-release-qt6
             name: qt6-macos-debug
           - os: windows-2019
             args: --64bit --debug
-            branch: qt6-v2
             toxenv: build-release-qt6
             name: qt6-windows-64bit-debug
     runs-on: "${{ matrix.os }}"