Remove option 'false' from document 'noindex' attribute

Author: TylerZeroMaster

client/static/xsd/cnxml.xsd

@@ -44,7 +44,6 @@
         <xs:simpleType>
           <xs:restriction base="xs:token">
             <xs:enumeration value="true"/>
-            <xs:enumeration value="false"/>
           </xs:restriction>
         </xs:simpleType>
       </xs:attribute>