refactor: Remove Dependencies Causing Install Issues on M1 (electron, spectron)

[klewis-sfdc]

What does this PR do?

• On a recently re-imaged M1 Mac, I am unable to install with the following error.
• This PR unblocks my current build on M1 by removing the offending dependency (that is no longer used by VSCE anyway)

`npm ERR! code 1
npm ERR! path /Users/kenneth.lewis/dev/salesforcedx-vscode/node_modules/electron-chromedriver
npm ERR! command failed
npm ERR! command sh -c node ./download-chromedriver.js
npm ERR! /Users/kenneth.lewis/dev/salesforcedx-vscode/node_modules/electron-chromedriver/download-chromedriver.js:19
npm ERR! if (err != null) throw err
npm ERR! ^
npm ERR!
npm ERR! Error: Failed to find Electron v7.0.0 for darwin-arm64 at https://github.com/electron/electron/releases/download/v7.0.0/chromedriver-v7.0.0-darwin-arm64.zip
npm ERR! at Request. (/Users/kenneth.lewis/dev/salesforcedx-vscode/node_modules/nugget/index.js:197:61)
npm ERR! at Request.emit (node:events:513:28)
npm ERR! at Request.onRequestResponse (/Users/kenneth.lewis/dev/salesforcedx-vscode/node_modules/request/request.js:1059:10)
npm ERR! at ClientRequest.emit (node:events:513:28)
npm ERR! at HTTPParser.parserOnIncomingClient [as onIncoming] (node:_http_client:693:27)
npm ERR! at HTTPParser.parserOnHeadersComplete (node:_http_common:128:17)
npm ERR! at TLSSocket.socketOnData (node:_http_client:534:22)
npm ERR! at TLSSocket.emit (node:events:513:28)
npm ERR! at addChunk (node:internal/streams/readable:315:12)
npm ERR! at readableAddChunk (node:internal/streams/readable:289:9)

npm ERR! A complete log of this run can be found in:
npm ERR! /Users/kenneth.lewis/.npm/_logs/2023-03-01T23_53_44_689Z-debug-0.log`

What issues does this PR fix or reference?

@W-12626905@

Functionality Before

• Can't build on local M1 Mac currently (as recently as yesterday I was able to successfully build with this same machine pre-re-image)

Functionality After

• M1 Mac build succeeds