CHORE: remove pragma no cover from twinbuilder method (#5798)

src/ansys/aedt/core/twinbuilder.py

@@ -655,7 +655,7 @@ def add_excitation_model(
         export_uniform_points=False,
         export_uniform_points_step=1e-5,
         excitations=None,
-    ):  # pragma: no cover
+    ):
         """Use the excitation component to assign output quantities
 
         This works in a Twin Builder design to a windings in a Maxwell design.