Revert "[WALLET + REACT] Add Cometh Connect"

[iketw]

Reverts #1749

Found a few issues with the build:

../../../node_modules/.pnpm/@cometh+connect-sdk@1.2.0_@babel+core@7.22.9_react-is@18.2.0/node_modules/@cometh/connect-sdk/dist/wallet/connectors/ConnectOnboardConnector.js
  Module not found: ESM packages (@web3-onboard/common) need to be imported. Use 'import' to reference the package instead. https://nextjs.org/docs/messages/import-esm-externals

and:

Unable to resolve module @simplewebauthn/server/helpers from /Users/dalmendraytw/dev/thirdweb/mobile/node_modules/@cometh/connect-sdk/dist/services/webAuthnService.js: @simplewebauthn/server/helpers could not be found within the project or in these directories:
  node_modules/@cometh/connect-sdk/node_modules
  node_modules
  ../../node_modules
  36 | };
  37 | Object.defineProperty(exports, "__esModule", { value: true });
> 38 | const helpers_1 = require("@simplewebauthn/server/helpers");

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