Remove Mock Web Service

[Supereg]

Problem

Currently, we maintain a Mock Web Service integration in the case you run your project without Firebase. However, this doesn't really help to demo any functionality and just increases the code complexity making it harder to start out with the template application.

Solution

Remove the MockWebService integration and remove the dependency.

Additional context

No response

Code of Conduct

• I agree to follow this project's Code of Conduct and Contributing Guidelines

[PSchmiedmayer]

Highly agree @Supereg 👍