dev: disable AppImage builds (#6504)

.github/workflows/build.yml

@@ -38,7 +38,6 @@ jobs:
             force-lto: false
             skip-artifact: false
             skip-crashpad: false
-            build-appimage: false
             build-deb: true
           - os: ubuntu-22.04
             container: ghcr.io/chatterino/chatterino2-build-ubuntu-22.04:latest
@@ -46,7 +45,6 @@ jobs:
             force-lto: false
             skip-artifact: false
             skip-crashpad: false
-            build-appimage: true
             build-deb: true
           - os: ubuntu-24.04
             container: ghcr.io/chatterino/chatterino2-build-ubuntu-24.04:latest
@@ -54,7 +52,6 @@ jobs:
             force-lto: false
             skip-artifact: false
             skip-crashpad: false
-            build-appimage: false
             build-deb: true
     env:
       C2_ENABLE_LTO: ${{ matrix.force-lto }}
@@ -103,19 +100,6 @@ jobs:
           git add -N lib/twitch-eventsub-ws/include lib/twitch-eventsub-ws/src
           git --no-pager diff --exit-code lib/twitch-eventsub-ws/include lib/twitch-eventsub-ws/src
 
-      - name: Package - AppImage (Ubuntu)
-        if: matrix.build-appimage
-        run: |
-          cd build
-          sh ./../.CI/CreateAppImage.sh
-
-      - name: Upload artifact - AppImage (Ubuntu)
-        if: matrix.build-appimage
-        uses: actions/upload-artifact@v4
-        with:
-          name: Chatterino-x86_64-Qt-${{ matrix.qt-version }}.AppImage
-          path: build/Chatterino-x86_64.AppImage
-
       - name: Package - .deb (Ubuntu)
         if: matrix.build-deb
         run: |
@@ -349,12 +333,6 @@ jobs:
           path: release-artifacts/
 
       # Linux
-      - uses: actions/download-artifact@v5
-        name: Linux AppImage
-        with:
-          name: Chatterino-x86_64-Qt-6.7.2.AppImage
-          path: release-artifacts/
-
       - uses: actions/download-artifact@v5
         name: Ubuntu 20.04 deb
         with: