Lido: remove unused obsolete _setBPValue()

Author: arwer13

contracts/0.4.24/Lido.sol

@@ -958,14 +958,6 @@ contract Lido is Versioned, StETHPermit, AragonApp {
         emit Unbuffered(_amount);
     }
 
-    /**
-    * @dev Write a value nominated in basis points
-    */
-    function _setBPValue(bytes32 _slot, uint16 _value) internal {
-        require(_value <= TOTAL_BASIS_POINTS, "VALUE_OVER_100_PERCENT");
-        _slot.setStorageUint256(uint256(_value));
-    }
-
     /**
      * @dev Gets the amount of Ether temporary buffered on this contract balance
      */