fixed coverity #163664 dead scope

plugins/org.yakindu.sct.model.stext/src/org/yakindu/sct/model/stext/scoping/StextImportAwareScopeProvider.java

@@ -9,7 +9,6 @@
 */
 package org.yakindu.sct.model.stext.scoping;
 
-import java.util.ArrayList;
 import java.util.List;
 
 import org.eclipse.emf.ecore.EObject;