Fixing repository test failure

components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/task/TestTaskManagerImpl.java

@@ -31,9 +31,6 @@ public class TestTaskManagerImpl implements TaskManager {
 
     @Override
     public boolean deleteTask(String taskName) throws TaskException {
-        if(this.registeredTasks.size() <= 0) {
-            throw new TaskException("Cannot delete task.", TaskException.Code.NO_TASK_EXISTS);
-        }
         for (TaskInfo task : this.registeredTasks) {
             if (task.getName().contains(taskName)) {
                 this.registeredTasks.remove(task);