Remove unused imports

packages/order-utils/src/index.ts

@@ -75,5 +75,4 @@ export {
     FindOrdersThatCoverMakerAssetFillAmountOpts,
     FeeOrdersAndRemainingFeeAmount,
     OrdersAndRemainingFillAmount,
-    BalanceAndAllowance,
 } from './types';

packages/order-utils/src/order_calculation_utils.ts

@@ -2,7 +2,6 @@ import { Order } from '@0x/types';
 import { BigNumber } from '@0x/utils';
 
 import { constants } from './constants';
-import { BalanceAndAllowance } from './types';
 
 export const orderCalculationUtils = {
     /**

packages/order-utils/src/types.ts

@@ -64,8 +64,3 @@ export interface OrdersAndRemainingFillAmount<T> {
     ordersRemainingFillableMakerAssetAmounts: BigNumber[];
     remainingFillAmount: BigNumber;
 }
-
-export interface BalanceAndAllowance {
-    balance: BigNumber;
-    allowance: BigNumber;
-}