Remove unused invocation of cargo llvm-cov

This was forgotten when removing the coverage upload. We still generated
the coverage file

.github/workflows/ci.yml

@@ -37,8 +37,6 @@ jobs:
         uses: actions-rust-lang/[email protected]
       - name: Setup nextest
         uses: taiki-e/install-action@nextest
-      - name: Setup cargo-llvm-cov
-        uses: taiki-e/install-action@cargo-llvm-cov
 
       - name: Rustfmt
         run: cargo fmt --all -- --check
@@ -47,7 +45,7 @@ jobs:
         run: cargo clippy ${{ matrix.flags }} --all-targets --all -- -D warnings
 
       - name: Tests
-        run: cargo llvm-cov nextest --all ${{ matrix.flags }} --lcov --output-path lcov.info
+        run: cargo nextest run --all ${{ matrix.flags }}
 
       - name: Check for clean repo
         shell: bash