Remove dependency on old ant tree

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@271334 13f79535-47bb-0310-9956-ffa450edef68

proposal/myrmidon/src/java/org/apache/myrmidon/framework/AbstractMatchingTask.java

@@ -8,7 +8,6 @@
 package org.apache.myrmidon.framework;
 
 import org.apache.myrmidon.api.AbstractTask;
-import org.apache.tools.ant.types.FileSet;
 
 /**
  * An abstract base class for tasks that wish to operate on