Revert "ci: add code coverage support"

This reverts commit 03f30cb.

Signed-off-by: Gris Ge <fge@redhat.com>

Author: cathay4t

.github/workflows/main.yml

@@ -15,19 +15,10 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      - name: Install Rust Stable
-        run: |
-          rustup override set stable
-          rustup update stable
-          rustup component add llvm-tools-preview
-
-      - name: Install cargo-llvm-cov
-        uses: taiki-e/install-action@cargo-llvm-cov
-
-      - name: Test and Generate code coverage
-        run: cargo llvm-cov --all-features --workspace --lcov --output-path lcov.info
-      - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v3
+      - uses: actions-rs/toolchain@v1
         with:
-          files: lcov.info
-          fail_ci_if_error: true
+            toolchain: stable
+            override: true
+
+      - name: Test with default feature
+        run: cargo test