Revert "correct the converge test"

This reverts commit a4b9ede.

Author: WHUweiqingzhou

.github/workflows/coverage.yml

@@ -19,12 +19,11 @@ jobs:
       - name: Building
         run: |
           cmake -B build -DENABLE_COVERAGE=ON -DBUILD_TESTING=ON -DENABLE_DEEPKS=ON -DENABLE_LIBXC=ON -DENABLE_LIBRI=ON -DENABLE_PAW=ON -DENABLE_GOOGLEBENCH=ON -DENABLE_RAPIDJSON=ON
-          cmake --build build -j8
+          cmake --build build -j`nproc`
           cmake --install build
       - name: Testing
         env:
-          GTEST_COLOR: 'yes'
-          OMP_NUM_THREADS: '2'
+          OMP_NUM_THREADS: 1
         run: |
           cmake --build build --target test ARGS="-V --timeout 21600"
       - name: Upload Coverage to Codecov