feat(ci): remove tarpaulin job

Author: cocool97

.github/workflows/rust.yml

@@ -39,22 +39,4 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - name: Run tests
-      run: cargo test --verbose
-
-  tarpaulin:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v2
-
-      - name: Install stable toolchain
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
-          override: true
-
-      - name: Run cargo-tarpaulin
-        uses: actions-rs/tarpaulin@v0.1
-
-      - name: Upload to codecov.io
-        uses: codecov/codecov-action@v1
+      run: cargo test --verbose