Cleanup

Author: kevingosse

tracer/src/Datadog.Trace/Tracer.cs

@@ -14,7 +14,6 @@
 using Datadog.Trace.Configuration;
 using Datadog.Trace.Debugger.SpanCodeOrigin;
 using Datadog.Trace.Logging.TracerFlare;
-using Datadog.Trace.Propagators;
 using Datadog.Trace.Sampling;
 using Datadog.Trace.SourceGenerators;
 using Datadog.Trace.Tagging;