Resolves: tdf#127450 max_content_[width|height] isn't available in gtk 3.18

so this crashes

Change-Id: Ie9b2607e4c4290f9745b8bc5f36b80d8970018b1
Reviewed-on: https://gerrit.libreoffice.org/79876
Reviewed-by: Michael Stahl <michael.stahl@cib.de>
Tested-by: Michael Stahl <michael.stahl@cib.de>
diff --git a/cui/uiconfig/ui/bulletandposition.ui b/cui/uiconfig/ui/bulletandposition.ui
index c62f1ac..0ec6c67 100644
--- a/cui/uiconfig/ui/bulletandposition.ui
+++ b/cui/uiconfig/ui/bulletandposition.ui
@@ -994,8 +994,6 @@
                        <property name="visible">True</property>
                        <property name="can_focus">True</property>
                        <property name="shadow_type">in</property>
                        <property name="max_content_width">150</property>
                        <property name="max_content_height">300</property>
                        <child>
                          <object class="GtkViewport">
                            <property name="visible">True</property>