It will work (one day)

Author: jantje

it.baeyens.arduino.updatesite/category.xml

@@ -1,8 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <site>
-   <feature url="features/it.baeyens.arduino.feature_3.0.0.qualifier.jar" id="it.baeyens.arduino.feature" version="3.0.0.qualifier">
-      <category name="Arduino"/>
-   </feature>
    <feature url="features/it.baeyens.arduino.feature_3.1.0.qualifier.jar" id="it.baeyens.arduino.feature" version="3.1.0.qualifier">
       <category name="Arduino"/>
    </feature>