remove EventAdaptor

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 90.69767% with 4 lines in your changes are missing coverage. Please review.

Project coverage is 50.06%. Comparing base (1213010) to head (7faa6b5).

Files	Patch %	Lines
src/iptux-core/Event.cpp	76.92%	3 Missing :warning:
src/api/iptux-core/Event.h	83.33%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #587 +/- ## ========================================== + Coverage 48.79% 50.06% +1.26% ========================================== Files 65 64 -1 Lines 8249 8236 -13 ========================================== + Hits 4025 4123 +98 + Misses 4224 4113 -111 ```

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