Older version of ant not needed

This reverts commit 24acf31d.

pom.xml

@@ -97,8 +97,7 @@
 		<dependency>
 			<groupId>org.apache.ant</groupId>
 			<artifactId>ant</artifactId>
-			<!-- 1.10.11: problem with directoriess -->
-			<version>1.8.1</version>
+			<version>1.10.11</version>
 		</dependency>
 		<dependency>
 			<groupId>commons-cli</groupId>