Update petab/v2/lint.py

Co-authored-by: Daniel Weindl <dweindl@users.noreply.github.com>

Author: BSnelling

petab/v2/lint.py

@@ -1109,11 +1109,6 @@ def append_overrides(overrides):
     )
 
     # Parameters that are overridden via the condition table are not allowed
-    condition_targets = {
-        change.target_id
-        for cond in problem.conditions
-        for change in cond.changes
-    }
     parameter_ids -= condition_targets
 
     return parameter_ids