ci: do not checkout submodules, because none exist

.github/workflows/release-tip.yml

@@ -31,9 +31,6 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
-        with:
-          submodules: recursive
-          fetch-depth: 0
 
       # Install Nix and use that to run our tests so our environment matches exactly.
       - uses: cachix/install-nix-action@v23

.github/workflows/test.yml

@@ -27,9 +27,6 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
-        with:
-          submodules: recursive
-          fetch-depth: 0
 
       # Install Nix and use that to run our tests so our environment matches exactly.
       - uses: cachix/install-nix-action@v23
@@ -50,9 +47,6 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
-        with:
-          submodules: recursive
-          fetch-depth: 0
 
       # Install Nix and use that to run our tests so our environment matches exactly.
       - uses: cachix/install-nix-action@v23
@@ -77,9 +71,7 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
-        with:
-          submodules: recursive
-          fetch-depth: 0
+
       # This could be from a script if we wanted to but inlining here for now
       # in one place.
       # Using powershell so that we do not need to install WSL components. Also,
@@ -130,9 +122,6 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
-        with:
-          submodules: recursive
-          fetch-depth: 0
 
       # Install Nix and use that to run our tests so our environment matches exactly.
       - uses: cachix/install-nix-action@v23