[350114] change build scripts not to use specific id for signing - remove staging directory
diff --git a/releng.wtpbuilder/scripts/build/signjars.xml b/releng.wtpbuilder/scripts/build/signjars.xml
index 4568f7b..edf84f9 100644
--- a/releng.wtpbuilder/scripts/build/signjars.xml
+++ b/releng.wtpbuilder/scripts/build/signjars.xml
@@ -80,7 +80,7 @@
         <mkdir dir="${stagingDirectory}"/>
 
         <echo message="Deleting any possible files in staging area just in case."/>
-        <delete>
+        <delete includeemptydirs="true" deleteonexit="true">
             <fileset dir="${stagingDirectory}">
             </fileset>
         </delete>