Feature/mob 774 unused strings

[danfbfern]

What does this PR do?

remove unused resources related to the login and account/store creation. Strings and unused images

Where should the reviewer start?

• strings.xml

How should this be manually tested?

N/A

What are the relevant tickets?

https://aptoide.atlassian.net/browse/MOB-774

Code Review Checklist

• [ ] Documentation on public interfaces
• [ ] Remove comments & unused code & forgotten testing Logs
• [ ] Codestyle
• [ ] Functional tests pass