Remove complicated testsetup code

[shivaenigma]

1. There is no need to call wallets api
2. Cleanup overcomplicated findMatchingStore logic. The logic is this:

• If callback URL exactly matches test setup run and shows enabled crypto
• Else it says ```Please add a new store with the callback URL shown in advanced settings`

3. There is no change in wizard logic and it operates as before

[anktd]

✅ in #415