CI: Disable repository submodule cloning

No longer needed.

.github/workflows/linux_build_flatpak.yml

@@ -57,7 +57,6 @@ jobs:
       - name: Checkout Repository
         uses: actions/checkout@v4
         with:
-          submodules: recursive
           set-safe-directory: ${{ env.GITHUB_WORKSPACE }}
 
       # Work around container ownership issue

.github/workflows/linux_build_qt.yml

@@ -68,8 +68,6 @@ jobs:
 
       - name: Checkout Repository
         uses: actions/checkout@v4
-        with:
-          submodules: recursive
 
       # actions/checkout elides tags, fetch them primarily for releases
       - name: Fetch Tags

.github/workflows/macos_build.yml

@@ -43,8 +43,6 @@ jobs:
     steps:
       - name: Checkout Repository
         uses: actions/checkout@v4
-        with:
-          submodules: recursive
 
       # actions/checkout elides tags, fetch them primarily for releases
       - name: Fetch Tags

.github/workflows/windows_build_qt.yml

@@ -61,8 +61,6 @@ jobs:
         
       - name: Checkout Repository
         uses: actions/checkout@v4
-        with:
-          submodules: recursive
 
       # actions/checkout elides tags, fetch them primarily for releases
       - name: Fetch Tags