optimize the code

Author: SatyamSB

contracts/libraries/VolumeRestrictionLib.sol

@@ -82,12 +82,12 @@ library VolumeRestrictionLib {
         // if restriction is to check whether the current transaction is performed within the 24 hours
         // span after the last transaction performed by the user 
         if (BokkyPooBahsDateTimeLibrary.diffSeconds(_lastTradedTimestamp, now) < 86400) {
-            (uint256 lastTxYear, uint256 lastTxMonth, uint256 lastTxDay) = BokkyPooBahsDateTimeLibrary.timestampToDate(_lastTradedTimestamp);
-            (uint256 currentTxYear, uint256 currentTxMonth, uint256 currentTxDay) = BokkyPooBahsDateTimeLibrary.timestampToDate(now);
+            (,, uint256 lastTxDay) = BokkyPooBahsDateTimeLibrary.timestampToDate(_lastTradedTimestamp);
+            (,, uint256 currentTxDay) = BokkyPooBahsDateTimeLibrary.timestampToDate(now);
             // This if statement is to check whether the last transaction timestamp (of `individualRestriction[_from]`
             // when `_isDefault` is true or defaultRestriction when `_isDefault` is false) is comes within the same day of the current
             // transaction timestamp or not.
-            if (lastTxYear == currentTxYear && lastTxMonth == currentTxMonth && lastTxDay == currentTxDay) {
+            if (lastTxDay == currentTxDay) {
                 // Not allow to transact more than the current transaction restriction allowed amount
                 if ((_sumOfLastPeriod.add(_amount)).add(_amountTradedLastDay) > _allowedAmount)
                     return false;