[pre-commit.ci lite] apply automatic fixes for ruff linting errors

Author: pre-commit-ci-lite[bot]

example/simul_fit.py

@@ -2,6 +2,7 @@
 from bumps.names import FitProblem, FreeVariables
 
 import sasdata
+
 from sasmodels.bumps_model import Experiment, Model
 from sasmodels.core import load_model
 from sasmodels.data import load_data