Remove rustup uninstall

Author: jonasbb

.github/workflows/ci-sub.yaml

@@ -8,7 +8,7 @@ jobs:
     name: "cargo clippy in subdir"
     runs-on: ubuntu-latest
     steps:
-      - run: rustup default none && rustup self uninstall -y
+      # - run: rustup default none && rustup self uninstall -y
       - run: |
           rustc --version || true
           cargo --version || true