fix ctrl+s missing in config pane

src/damaris/gui/damaris3.glade

@@ -924,7 +924,6 @@ Public License instead of this License.
                       <object class="GtkSourceView" id="data_handling_textview">
                         <property name="visible">True</property>
                         <property name="can-focus">True</property>
-                        <signal name="event" handler="on_data_handling_textview_event" swapped="no"/>
                       </object>
                     </child>
                   </object>