chore: remove sql project (❗)

[stijnmoreels]

Remove deprecated SQL project.

Closes #496

[netlify]

✅ Deploy Preview for arcus-observability canceled.

Name	Link
🔨 Latest commit	dac33af
🔍 Latest deploy log	https://app.netlify.com/sites/arcus-observability/deploys/63ca6b993a27ed0008a51b5e

[codecov]

Codecov Report

Base: 86.53% // Head: 86.37% // Decreases project coverage by -0.16% ⚠️

Coverage data is based on head (dac33af) compared to base (00fad63).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #520      +/-   ##
==========================================
- Coverage   86.53%   86.37%   -0.16%     
==========================================
  Files          77       76       -1     
  Lines        3246     3201      -45     
  Branches      220      220              
==========================================
- Hits         2809     2765      -44     
  Misses        360      360              
+ Partials       77       76       -1     

Impacted Files	Coverage Δ
...Core/Extensions/ILoggerHttpDependencyExtensions.cs	98.18% <0.00%> (+0.22%)	⬆️
...Core/Extensions/ILoggerHttpDependencyExtensions.cs	100.00% <0.00%> (+1.63%)	⬆️

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[stijnmoreels]

Since the Arcus.Observability.Telemetry.Sql package is made deprecated, we can remove this so we no longer release a version of it.

[fgheysels]

We do not remove the files itself as well?

[stijnmoreels]

We do not remove the files itself as well?

Aha, forgot that 😄 Done in dac33af