Remove useless translation.

gtk/in_call_frame.ui

@@ -97,7 +97,7 @@
                     <property name="visible">True</property>
                     <property name="can_focus">False</property>
                     <property name="xalign">0</property>
-                    <property name="label" translatable="yes">Encryption status</property>
+                    <property name="label">Encryption status</property>
                   </object>
                   <packing>
                     <property name="expand">True</property>