update CI

Author: JasonShin

.github/workflows/ci.yml .github/workflows/rust.yml.github/workflows/ci.yml renamed to .github/workflows/rust.yml

@@ -48,19 +48,3 @@ jobs:
         run: cargo test --all-features --workspace
       - name: Run doc tests
         run: cargo test --doc --workspace
-
-  coverage:
-    name: Code Coverage
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@stable
-      - name: Install cargo-tarpaulin
-        run: cargo install cargo-tarpaulin
-      - name: Generate coverage
-        run: cargo tarpaulin --workspace --out xml
-      - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v4
-        with:
-          files: ./cobertura.xml
-          fail_ci_if_error: false