createnet: Remove some unnecessary max_length annotations

Fixes: virt-manager#238

Signed-off-by: Cole Robinson <[email protected]>

Author: crobinso

ui/createnet.ui

@@ -229,7 +229,6 @@
                           <object class="GtkEntry" id="net-name">
                             <property name="visible">True</property>
                             <property name="can_focus">True</property>
-                            <property name="max_length">16</property>
                             <property name="width_chars">25</property>
                             <child internal-child="accessible">
                               <object class="AtkObject" id="net-name-atkobject">
@@ -730,7 +729,6 @@
                                   <object class="GtkEntry" id="net-domain-name">
                                     <property name="visible">True</property>
                                     <property name="can_focus">True</property>
-                                    <property name="max_length">20</property>
                                     <property name="invisible_char">●</property>
                                     <property name="width_chars">20</property>
                                     <child internal-child="accessible">