chore: remove mvvm-di sample

[buenaflor]

#skip-changelog

This sample has not been maintained (by us) and used for debugging in a long time and I'd rather keep 2 simple samples: one for cocoapods and one for spm

That should be enough

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.87%. Comparing base (6739707) to head (f7b98d4).
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #378   +/-   ##
=======================================
  Coverage   79.87%   79.87%           
=======================================
  Files          44       44           
  Lines         810      810           
  Branches      108      108           
=======================================
  Hits          647      647           
  Misses        107      107           
  Partials       56       56           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.