remove an uneeded eventbox

src/gtkgui.glade

@@ -8506,21 +8506,7 @@ Custom</property>
 		      <property name="spacing">1</property>
 		      <child>
-			<widget class="GtkEventBox" id="eventbox4">
-			  <property name="visible">True</property>
-			  <property name="tooltip" translatable="yes">Click to toggle OpenPGP encryption</property>
-			  <property name="visible_window">True</property>
-			  <property name="above_child">False</property>
-
-			  <child>
-			    <placeholder/>
-			  </child>
-			</widget>
-			<packing>
-			  <property name="padding">0</property>
-			  <property name="expand">False</property>
-			  <property name="fill">True</property>
-			</packing>
+			<placeholder/>
 		      </child>
 		      <child>