tdf#105637 Digital signatures dialog has unnessary labels

Change-Id: I474968d566a31fba29bcdc1f74749de8e86fedce
Reviewed-on: https://gerrit.libreoffice.org/33754Reviewed-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>
Tested-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>

xmlsecurity/uiconfig/ui/digitalsignaturesdialog.ui

@@ -194,7 +194,7 @@
                 </child>
                 <child>
                   <object class="GtkLabel" id="description">
-                    <property name="visible">True</property>
+                    <property name="no_show_all">True</property>
                     <property name="can_focus">False</property>
                     <property name="label" translatable="yes">Description</property>
                   </object>
@@ -205,7 +205,7 @@
                 </child>
                 <child>
                   <object class="GtkLabel" id="type">
-                    <property name="visible">True</property>
+                    <property name="no_show_all">True</property>
                     <property name="can_focus">False</property>
                     <property name="label" translatable="yes">Signature type</property>
                   </object>