Fix regression test selection logic

Author: cc-a

tests/test_fullsim_regression.py

@@ -3,8 +3,9 @@
 from muse.examples import available_examples
 from pytest import mark
 
+# hack to skip regression tests for new input schema
 MODELS = available_examples()
-MODELS.pop("default_new_input")
+MODELS.pop(MODELS.index("default_new_input"))
 
 
 @mark.usefixtures("save_timeslice_globals")