update import statement in mc_multicpu_test.py

Author: fancaiyu

.github/workflows/CI.yml

@@ -36,7 +36,6 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install .
           pip install coverage
           pip install pytest pytest-cov
           pip install -r requirements.txt

MCintegration/mc_multicpu_test.py

@@ -2,8 +2,7 @@
 import torch.distributed as dist
 import torch.multiprocessing as mp
 import os
-import MCintegration
-from MCintegration import MonteCarlo, MarkovChainMonteCarlo
+from integrators import MonteCarlo, MarkovChainMonteCarlo
 
 
 def init_process(rank, world_size, fn, backend="gloo"):