Unnecessary using

Signed-off-by: Travis Angevine <[email protected]>

Author: trangevi

specification/ai/ModelClient/routes.tsp

@@ -12,7 +12,6 @@ using TypeSpec.Rest;
 using TypeSpec.Http;
 using TypeSpec.Versioning;
 using Azure.Core;
-using Azure.Core.Traits;
 
 namespace AI.Model;