remove suspension BC in main window

src/View/BoundaryCondition/Window.py

@@ -94,7 +94,7 @@ class BoundaryConditionWindow(PamhyrWindow):
     def setup_table(self):
         self._table = {}
 
-        for t in ["liquid", "solid", "suspenssion"]:
+        for t in ["liquid", "solid"]:
             self._delegate_type = ComboBoxDelegate(
                 trad=self._trad,
                 data=self._study.river,