fixed some linter warning

Author: yudilevi

contracts/helpers/MockUniswapV2Factory.sol

@@ -5,9 +5,6 @@ import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
 import { EnumerableSet } from "@openzeppelin/contracts/utils/structs/EnumerableSet.sol";
 
-import { Token } from "../token/Token.sol";
-import { TokenLibrary } from "../token/TokenLibrary.sol";
-
 import { Utils } from "../utility/Utils.sol";
 
 import { MockUniswapV2Pair } from "./MockUniswapV2Pair.sol";

contracts/helpers/TestPoolCollection.sol

@@ -10,7 +10,6 @@ import { IMasterVault } from "../vaults/interfaces/IMasterVault.sol";
 import { IExternalProtectionVault } from "../vaults/interfaces/IExternalProtectionVault.sol";
 
 import { IBNTPool } from "../pools/interfaces/IBNTPool.sol";
-import { IPoolToken } from "../pools/interfaces/IPoolToken.sol";
 import { IPoolTokenFactory } from "../pools/interfaces/IPoolTokenFactory.sol";
 import { IPoolMigrator } from "../pools/interfaces/IPoolMigrator.sol";
 import { PoolCollection, Pool, PoolLiquidity, InternalWithdrawalAmounts, PoolRateState } from "../pools/PoolCollection.sol";

contracts/helpers/TestUpgradeable.sol

@@ -1,7 +1,6 @@
 // SPDX-License-Identifier: SEE LICENSE IN LICENSE
 pragma solidity 0.8.13;
 
-import { IVersioned } from "../utility/interfaces/IVersioned.sol";
 import { Upgradeable } from "../utility/Upgradeable.sol";
 
 contract TestUpgradeable is Upgradeable {

contracts/network/BancorNetwork.sol

@@ -23,8 +23,7 @@ import {
  DoesNotExist,
  InvalidToken,
  InvalidPool,
- InvalidPoolCollection,
- NotEmpty
+NotEmpty
 } from "../utility/Utils.sol";
 
 import { ROLE_ASSET_MANAGER } from "../vaults/interfaces/IVault.sol";

contracts/network/NetworkSettings.sol

@@ -11,7 +11,7 @@ import { Utils, AlreadyExists, DoesNotExist, InvalidParam } from "../utility/Uti
 import { Token } from "../token/Token.sol";
 import { TokenLibrary } from "../token/TokenLibrary.sol";
 
-import { INetworkSettings, VortexRewards, NotWhitelisted, NotWhitelistedForPOL } from "./interfaces/INetworkSettings.sol";
+import { INetworkSettings, VortexRewards, NotWhitelisted } from "./interfaces/INetworkSettings.sol";
 
 /**
  * @dev Network Settings contract

contracts/pools/PoolCollection.sol

@@ -16,7 +16,7 @@ import { IVersioned } from "../utility/interfaces/IVersioned.sol";
 import { PPM_RESOLUTION } from "../utility/Constants.sol";
 import { Owned } from "../utility/Owned.sol";
 import { BlockNumber } from "../utility/BlockNumber.sol";
-import { Fraction, Fraction112, FractionLibrary, zeroFraction, zeroFraction112 } from "../utility/FractionLibrary.sol";
+import { Fraction, Fraction112, FractionLibrary, zeroFraction112 } from "../utility/FractionLibrary.sol";
 import { Sint256, MathEx } from "../utility/MathEx.sol";
 
 // prettier-ignore
@@ -25,7 +25,6 @@ import {
  AlreadyExists,
  DoesNotExist,
  InvalidParam,
- InvalidPoolCollection,
  InvalidStakedBalance
 } from "../utility/Utils.sol";
 

contracts/pools/PoolMigrator.sol

@@ -10,7 +10,7 @@ import { IPoolMigrator } from "./interfaces/IPoolMigrator.sol";
 import { IVersioned } from "../utility/interfaces/IVersioned.sol";
 import { Upgradeable } from "../utility/Upgradeable.sol";
 import { Token } from "../token/Token.sol";
-import { Utils, AlreadyExists, InvalidPool, InvalidPoolCollection } from "../utility/Utils.sol";
+import { Utils, AlreadyExists, InvalidPool } from "../utility/Utils.sol";
 
 interface IPoolCollectionBase {
  function migratePoolOut(Token pool, IPoolCollection targetPoolCollection) external;

contracts/token/TokenLibrary.sol

@@ -4,7 +4,6 @@ pragma solidity 0.8.13;
 import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 import { ERC20 } from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
 import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
-import { IERC20Permit } from "@openzeppelin/contracts/token/ERC20/extensions/draft-IERC20Permit.sol";
 
 import { SafeERC20Ex } from "./SafeERC20Ex.sol";
 

package.json

@@ -55,7 +55,7 @@
  "size": "yarn rebuild && hardhat size-contracts",
  "flatten": "hardhat flatten",
  "lint": "yarn lint:sol && yarn lint:ts",
- "lint:sol": "solhint --max-warnings 0 contracts/**/*.sol",
+ "lint:sol": "solhint contracts/**/*.sol",
  "lint:ts": "yarn eslint components deploy test utils",
  "format": "NODE_OPTIONS='--max-old-space-size=8192' prettier --check --write components/**/*.ts contracts/**/*.sol deploy/**/*.ts scripts/**/*.ts test/**/*.ts test/**/*.json utils/**/*.ts --config .prettierrc",
  "snyk-protect": "snyk-protect",