Remove erc20.spec.ts integration tests

integration-tests/test/erc20.spec.ts

-import { Contract, ContractFactory, Wallet } from 'ethers'
-import { ethers } from 'hardhat'
-import { TxGasLimit, TxGasPrice } from '@eth-optimism/core-utils'
-import chai, { expect } from 'chai'
-import { GWEI } from './shared/utils'
-import { OptimismEnv } from './shared/env'
-import { solidity } from 'ethereum-waffle'
-
-chai.use(solidity)
-
-describe('Basic ERC20 interactions', async () => {
-  const initialAmount = 1000
-  const tokenName = 'OVM Test'
-  const tokenDecimals = 8
-  const TokenSymbol = 'OVM'
-
-  let wallet: Wallet
-  let other: Wallet
-  let Factory__ERC20: ContractFactory
-  let ERC20: Contract
-
-  before(async () => {
-    const env = await OptimismEnv.new()
-    wallet = env.l2Wallet
-    other = Wallet.createRandom().connect(ethers.provider)
-    Factory__ERC20 = await ethers.getContractFactory('ERC20', wallet)
-  })
-
-  beforeEach(async () => {
-    ERC20 = await Factory__ERC20.deploy(
-      initialAmount,
-      tokenName,
-      tokenDecimals,
-      TokenSymbol
-    )
-  })
-
-  it('should set the total supply', async () => {
-    const totalSupply = await ERC20.totalSupply()
-    expect(totalSupply.toNumber()).to.equal(initialAmount)
-  })
-
-  it('should get the token name', async () => {
-    const name = await ERC20.name()
-    expect(name).to.equal(tokenName)
-  })
-
-  it('should get the token decimals', async () => {
-    const decimals = await ERC20.decimals()
-    expect(decimals).to.equal(tokenDecimals)
-  })
-
-  it('should get the token symbol', async () => {
-    const symbol = await ERC20.symbol()
-    expect(symbol).to.equal(TokenSymbol)
-  })
-
-  it('should assign initial balance', async () => {
-    const balance = await ERC20.balanceOf(wallet.address)
-    expect(balance.toNumber()).to.equal(initialAmount)
-  })
-
-  it('should transfer amount to destination account', async () => {
-    const transfer = await ERC20.transfer(other.address, 100)
-    const receipt = await transfer.wait()
-
-    expect(receipt.events.length).to.equal(1)
-    expect(receipt.events[0].args._from).to.equal(wallet.address)
-    expect(receipt.events[0].args._value.toNumber()).to.equal(100)
-
-    const receiverBalance = await ERC20.balanceOf(other.address)
-    const senderBalance = await ERC20.balanceOf(wallet.address)
-
-    expect(receiverBalance.toNumber()).to.equal(100)
-    expect(senderBalance.toNumber()).to.equal(900)
-  })
-
-  it('should revert if trying to transfer too much', async () => {
-    await expect(
-      ERC20.transfer(other.address, initialAmount * 2)
-    ).to.be.revertedWith('insufficient balance')
-  })
-})