Removed validation plugin from feature

features/org.yakindu.sct-feature/feature.xml

@@ -46,13 +46,6 @@
          version="0.0.0"
          unpack="false"/>
 
-   <plugin
-         id="org.yakindu.sct.statechart.diagram.validation"
-         download-size="0"
-         install-size="0"
-         version="0.0.0"
-         unpack="false"/>
-
    <plugin
          id="org.yakindu.sct.statechart.expressions"
          download-size="0"