Merge pull request #600 from cmorty/pull/cooja-also-remove-uninitialized-mote

Cooja: Also remove uninitialized motes

tools/cooja/java/org/contikios/cooja/Simulation.java

@@ -757,6 +757,7 @@ public class Simulation extends Observable implements Runnable {
     Runnable removeMote = new Runnable() {
       public void run() {
         motes.remove(mote);
+        motesUninit.remove(mote);
         currentRadioMedium.unregisterMote(mote, Simulation.this);
 
         /* Dispose mote interface resources */