Remove ktorfit

[poliver]

No sense maintaining a compiler plugin when our use case is so simple. Using Ktor directly is straightforward enough.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 23 lines in your changes missing coverage. Please review.
✅ Project coverage is 0.56%. Comparing base (3783a1e) to head (9304d55).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
.../meshtastic/core/network/di/GoogleNetworkModule.kt	0.00%	20 Missing ⚠️
.../org/meshtastic/core/network/service/ApiService.kt	0.00%	3 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##            main   #4019      +/-   ##
========================================
- Coverage   0.56%   0.56%   -0.01%     
========================================
  Files        404     405       +1     
  Lines      24116   24117       +1     
  Branches    3098    3098              
========================================
  Hits         136     136              
- Misses     23959   23960       +1     
  Partials      21      21              

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