ci: remove tarpulin

.github/workflows/ci.yml

@@ -30,19 +30,8 @@ jobs:
         uses: actions/checkout@v4
       - name: Install Rust toolchain
         uses: dtolnay/rust-toolchain@stable
-      - name: Setup cargo-tarpaulin
-        uses: taiki-e/install-action@cargo-tarpaulin
       - name: Run tests
-        run: cargo tarpaulin --out xml --verbose -- --test-threads 1
-      - name: Upload reports to codecov
-        uses: codecov/codecov-action@v3
-        with:
-          name: code-coverage-report
-          file: cobertura.xml
-          flags: unit-tests
-          fail_ci_if_error: true
-          verbose: true
-          token: ${{ secrets.CODECOV_TOKEN }}
+        run: cargo test -- --test-threads 1
 
   fixtures:
     strategy: