fix(collector): remove inert AddQylAspNetCoreInstrumentation + dishonest comment (CODE RED)

[ANcpLua]

CODE RED finding #5 (HIGH, mine): the 4.0.0 cutover added builder.Services.AddQylAspNetCoreInstrumentation() with a comment claiming it wires the server-request span. It doesn't — QylActivitySource ("Qyl.OpenTelemetry.AutoInstrumentation") is AddSource'd on no TracerProvider in the collector (grep = 0 hits), so StartActivity returns null and the middleware emits zero spans. The collector's real SERVER/CLIENT spans come from built-in AddAspNetCoreInstrumentation + AddHttpClientInstrumentation (OTel-conformant, carry http.route).

Removes the dead call + false comment + now-unused using. No telemetry lost. Collector Release builds 0/0.

🤖 Generated with Claude Code

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Pull request overview

Removes a collector startup registration and comment that implied qyl’s custom ASP.NET Core “server-request span” middleware was responsible for request spans, when the collector’s actual tracing is already provided via OpenTelemetry’s AddAspNetCoreInstrumentation / AddHttpClientInstrumentation configured in ServiceDefaults.

Changes:

• Remove builder.Services.AddQylAspNetCoreInstrumentation() from the collector startup pipeline.
• Remove the accompanying comment and now-unused using Qyl.OpenTelemetry.AutoInstrumentation;.