[563236] removed deprecated interface IPluginDescriptor

removed interface and empty method stub

Change-Id: I38a0e90ea7e039aa307c3efa0f57396f9c83e174
Signed-off-by: Ralph Soika <ralph.soika@imixs.com>
diff --git a/plugins/org.eclipse.bpmn2.modeler.core/src/org/eclipse/bpmn2/modeler/core/runtime/XMLConfigElement.java b/plugins/org.eclipse.bpmn2.modeler.core/src/org/eclipse/bpmn2/modeler/core/runtime/XMLConfigElement.java
index e1a9b66..1fd3eaf 100644
--- a/plugins/org.eclipse.bpmn2.modeler.core/src/org/eclipse/bpmn2/modeler/core/runtime/XMLConfigElement.java
+++ b/plugins/org.eclipse.bpmn2.modeler.core/src/org/eclipse/bpmn2/modeler/core/runtime/XMLConfigElement.java
@@ -23,7 +23,6 @@
 import org.eclipse.core.runtime.IContributor;
 import org.eclipse.core.runtime.IExtension;
 import org.eclipse.core.runtime.IPath;
-import org.eclipse.core.runtime.IPluginDescriptor;
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.InvalidRegistryObjectException;
 import org.eclipse.core.runtime.Path;
@@ -262,11 +261,6 @@
 			// TODO Auto-generated method stub
 			return false;
 		}
-
-		public IPluginDescriptor getDeclaringPluginDescriptor() throws InvalidRegistryObjectException {
-			// TODO Auto-generated method stub
-			return null;
-		}
 		
 	}
 }