message: maint(ct): clean up OVM_ETH tests
  Cleans up OVM_ETH tests using the same techniques as other cleanup PRs.
diff: /* External Imports */
  import { ethers } from 'hardhat'
  -import { ContractFactory, Contract, Signer } from 'ethers'
  +import { Contract } from 'ethers'
  +import { SignerWithAddress } from '@nomiclabs/hardhat-ethers/signers'
  import { expect } from '../../../setup'
  +import { deploy } from '../../../helpers'
  describe('OVM_ETH', () => {
  - let signer1: Signer
  - let signer2: Signer
  + let signer1: SignerWithAddress
  + let signer2: SignerWithAddress
  before(async () => {
  ;[signer1, signer2] = await ethers.getSigners()
  })
  - let Factory__OVM_ETH: ContractFactory
  - before(async () => {
  - Factory__OVM_ETH = await ethers.getContractFactory('OVM_ETH')
  - })
  -
  let OVM_ETH: Contract
  beforeEach(async () => {
  - OVM_ETH = await Factory__OVM_ETH.deploy()
  + OVM_ETH = await deploy('OVM_ETH')
  })
  describe('transfer', () => {
  it('should revert', async () => {
  - await expect(
  - OVM_ETH.transfer(await signer2.getAddress(), 100)
  - ).to.be.revertedWith(
  + await expect(OVM_ETH.transfer(signer2.address, 100)).to.be.revertedWith(
  'OVM_ETH: transfer is disabled pending further community discussion.'
  )
  })
  @@ -33,9 +28,7 @@ describe('OVM_ETH', () => {
  describe('approve', () => {
  it('should revert', async () => {
  - await expect(
  - OVM_ETH.approve(await signer2.getAddress(), 100)
  - ).to.be.revertedWith(
  + await expect(OVM_ETH.approve(signer2.address, 100)).to.be.revertedWith(
  'OVM_ETH: approve is disabled pending further community discussion.'
  )
  })
  @@ -44,11 +37,7 @@ describe('OVM_ETH', () => {
  describe('transferFrom', () => {
  it('should revert', async () => {
  await expect(
  - OVM_ETH.transferFrom(
  - await signer1.getAddress(),
  - await signer2.getAddress(),
  - 100
  - )
  + OVM_ETH.transferFrom(signer1.address, signer2.address, 100)
  ).to.be.revertedWith(
  'OVM_ETH: transferFrom is disabled pending further community discussion.'
  )
  @@ -58,7 +47,7 @@ describe('OVM_ETH', () => {
  describe('increaseAllowance', () => {
  it('should revert', async () => {
  await expect(
  - OVM_ETH.increaseAllowance(await signer2.getAddress(), 100)
  + OVM_ETH.increaseAllowance(signer2.address, 100)
  ).to.be.revertedWith(
  'OVM_ETH: increaseAllowance is disabled pending further community discussion.'
  )
  @@ -68,7 +57,7 @@ describe('OVM_ETH', () => {
  describe('decreaseAllowance', () => {
  it('should revert', async () => {
  await expect(
  - OVM_ETH.decreaseAllowance(await signer2.getAddress(), 100)
  + OVM_ETH.decreaseAllowance(signer2.address, 100)
  ).to.be.revertedWith(
  'OVM_ETH: decreaseAllowance is disabled pending further community discussion.'
  )
  