fix(Linguo): remove require in getDeposit

Author: unknownunknown1

contracts/standard/arbitration/Linguo.sol

@@ -536,8 +536,7 @@ contract Linguo is Arbitrable {
      */
     function getDepositValue(uint _taskID) public view returns (uint deposit) {
         Task storage task = tasks[_taskID];
-        require(task.status == Status.Created, "The task can't be assigned.");
-        if (now - task.lastInteraction > task.submissionTimeout){
+        if (now - task.lastInteraction > task.submissionTimeout || task.status != Status.Created) {
             deposit = NOT_PAYABLE_VALUE;
         } else {
             uint price = task.minPrice + (task.maxPrice - task.minPrice) * (now - task.lastInteraction) / task.submissionTimeout;