add missing arg on remove

Author: nmwsharp

src/polyscope/structure.py

@@ -21,9 +21,9 @@ def remove(self):
     def remove_all_quantities(self):
         '''Remove all quantities on the structure'''
         self.bound_instance.remove_all_quantities()
-    def remove_quantity(self, name):
+    def remove_quantity(self, name, error_if_absent=False):
         '''Remove a single quantity on the structure'''
-        self.bound_instance.remove_quantity(name)
+        self.bound_instance.remove_quantity(name, error_if_absent)
 
 
     ## Enable/disable