Fixed regression introduced in r11806 causing the following exception:

Exception in thread "main" java.lang.IllegalStateException
05:13:47 	at java.util.AbstractList$Itr.remove(AbstractList.java:356)
05:13:47 	at org.forgerock.opendj.config.dsconfig.DSConfig.removeBatchArgs(DSConfig.java:1501)
05:13:47 	at org.forgerock.opendj.config.dsconfig.DSConfig.handleBatchFile(DSConfig.java:1428)
05:13:47 	at org.forgerock.opendj.config.dsconfig.DSConfig.run(DSConfig.java:1123)
05:13:47 	at org.forgerock.opendj.config.dsconfig.DSConfig.main(DSConfig.java:794)
05:13:47 	at org.forgerock.opendj.config.dsconfig.DSConfig.main(DSConfig.java:762)


DSConfig.java:
In removeBatchArgs(), call Iterator.next() before calling Iterator.remove() a second time.