no directory change before mock_snakemake

scripts/base_network.py

@@ -781,12 +781,9 @@ def base_network(
 
 if __name__ == "__main__":
     if "snakemake" not in globals():
-        import os
 
         from _helpers import mock_snakemake
 
-        os.chdir(os.path.dirname(os.path.abspath(__file__)))
-
         snakemake = mock_snakemake("base_network")
     configure_logging(snakemake)
     set_scenario_config(snakemake)