diff --git a/src/distrib/plugins/meshlabfilterXMLspecificationformat.xsd b/src/distrib/plugins/meshlabfilterXMLspecificationformat.xsd
deleted file mode 100644
index 036ca254d..000000000
--- a/src/distrib/plugins/meshlabfilterXMLspecificationformat.xsd
+++ /dev/null
@@ -1,100 +0,0 @@
-<?xml version="1.0"?>
-
-<xs:schema xmlns:xs='http://www.w3.org/2001/XMLSchema'>
-
- <xs:element name='MESHLAB_FILTER_INTERFACE'>
-  <xs:complexType>
-   <xs:sequence>
-    <xs:element ref='PLUGIN'/>
-   </xs:sequence>
-   <xs:attribute name='mfiVersion' type='xs:string' use='required'/>
-  </xs:complexType>
- </xs:element>
-
- <xs:element name='PLUGIN'>
-  <xs:complexType>
-   <xs:sequence>
-    <xs:element ref='FILTER' maxOccurs='unbounded'/>
-   </xs:sequence>
-   <xs:attribute name='pluginName' type='xs:string' use='required'/>
-  </xs:complexType>
- </xs:element>
-
- <xs:element name='FILTER'>
-  <xs:complexType>
-   <xs:sequence>
-    <xs:element ref='FILTER_HELP'/>
-    <xs:element ref='PARAM' minOccurs='0' maxOccurs='unbounded'/>
-   </xs:sequence>
-   <xs:attribute name='filterName' type='xs:string' use='required'/>
-   <xs:attribute name='filterFunction' type='xs:string' use='required'/>
-   <xs:attribute name='filterClass' type='xs:string' use='required'/>
-   <xs:attribute name='filterPre' type='xs:string' use='required'/>
-   <xs:attribute name='filterPost' type='xs:string' use='required'/>
-   <xs:attribute name='filterAriety' type='ArietyType' use='required'/>
-  </xs:complexType>
- </xs:element>
-
- <xs:element name='FILTER_HELP'>
-  <xs:complexType mixed='true'>
-  </xs:complexType>
- </xs:element>
-
- <xs:element name='PARAM'>
-  <xs:complexType>
-   <xs:sequence>
-    <xs:element ref='PARAM_HELP'/>
-    <xs:choice>
-     <xs:element ref='CHECKBOX_GUI'/>
-     <xs:element ref='ABSPERC_GUI'/>
-	 <xs:element ref='EDIT_GUI'/>
-    </xs:choice>
-   </xs:sequence>
-   <xs:attribute name='parType' use='required'>
-    <xs:simpleType>
-     <xs:restriction base='xs:string'>
-      <xs:enumeration value='Boolean'/>
-      <xs:enumeration value='Real'/>
-     </xs:restriction>
-    </xs:simpleType>
-   </xs:attribute>
-   <xs:attribute name='parName' type='xs:ID' use='required'/>
-   <xs:attribute name='parDefault' type='xs:string' use='required'/>
-   <xs:attribute name='parIsImportant' type='xs:string' use='required'/>
-  </xs:complexType>
- </xs:element>
-
- <xs:element name='PARAM_HELP'>
-  <xs:complexType mixed='true'>
-  </xs:complexType>
- </xs:element>
-
- <xs:element name='CHECKBOX_GUI'>
-  <xs:complexType>
-   <xs:attribute name='guiLabel' type='xs:string' use='required'/>
-  </xs:complexType>
- </xs:element>
- 
- <xs:element name='EDIT_GUI'>
-  <xs:complexType>
-   <xs:attribute name='guiLabel' type='xs:string' use='required'/>
-  </xs:complexType>
- </xs:element>
- 
- <xs:element name='ABSPERC_GUI'>
-  <xs:complexType>
-   <xs:attribute name='guiLabel' type='xs:string' use='required'/>
-   <xs:attribute name='guiMin' type='xs:string' use='required'/>
-   <xs:attribute name='guiMax' type='xs:string' use='required'/>
-  </xs:complexType>
- </xs:element>
-
- <xs:simpleType name="ArietyType">
-  <xs:restriction base="xs:string">
-    <xs:enumeration value="SingleMesh"/>
-    <xs:enumeration value="Fixed"/>
-    <xs:enumeration value="Variable"/>
-  </xs:restriction>
-</xs:simpleType>
-</xs:schema>
-