ci: we no longer need to install rust as we scwitched to electron

Author: abose

.github/workflows/desktop-linux-test-pull.yml

@@ -17,10 +17,6 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: 24
-      - name: install Rust stable
-        uses: dtolnay/rust-toolchain@stable
-        with:
-          toolchain: 1.85.1
 
       - name: install dependencies (ubuntu only)
         run: |