Remove corsa-specific steps from copilot-setup-steps.yml (#61938)

Author: RyanCavanaugh

.github/workflows/copilot-setup-steps.yml

@@ -16,13 +16,7 @@ jobs:
     # If you do not check out your code, Copilot will do this for you.
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-        with:
-          submodules: true
       - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
-      - uses: dtolnay/rust-toolchain@fcf085fcb4b4b8f63f96906cd713eb52181b5ea4 # stable
-      - uses: ./.github/actions/setup-go
-        with:
-          cache-name: copilot-setup-steps
       - run: npm ci
       # pull dprint caches before network access is blocked
       - run: npx hereby check:format || true