Remove thread sleep

Author: carlosrfranco

src/main/java/com/dtolabs/rundeck/plugin/resources/ec2/InstanceToNodeMapper.java

@@ -190,12 +190,6 @@ private Set<Instance> getInstancesByRegion(String endpoint) {
             allInstances.addAll(newInstances);
         }
 
-        try {
-            Thread.sleep(100);
-        } catch (InterruptedException ex) {
-            Thread.currentThread().interrupt();
-        }
-
         return allInstances;
     }