Delete tmp dir as it should not be part of the task output

Author: jjohannes

src/main/java/org/gradlex/javamodule/packaging/tasks/Jpackage.java

@@ -205,7 +205,7 @@ public void runJpackage() throws Exception {
                 })
         );
 
-        // getFiles().delete(tmpDir);
+        getFiles().delete(tmpDir);
 
         generateChecksums();
     }