Removed [5207], Nightly Builds are working again.

L2J_Server_BETA/build.xml

@@ -164,9 +164,6 @@
 	</target>
 
 	<target name="clean" description="Remove the output directories">
-		<exec dir="." executable="svn">
-			<arg value="upgrade" />
-		</exec>
 		<delete dir="${build}" />
 	</target>