remove the diagnostic, will add it into csharp side later

packages/http-client-csharp/emitter/src/lib/client-model-builder.ts

@@ -92,23 +92,10 @@ export function createModel(sdkContext: CSharpEmitterContext): CodeModel {
     const uri = getMethodUri(endpointParameter);
     const clientParameters = fromSdkEndpointParameter(endpointParameter);
     const clientName = getClientName(client, parentNames);
-    // see if this namespace is a sub-namespace of an existing bad namespace
-    const segments = client.clientNamespace.split(".");
-    const lastSegment = segments[segments.length - 1];
-    if (lastSegment === clientName) {
-      // we report diagnostics when the last segment of the namespace is the same as the client name
-      // because in our design, a sub namespace will be generated as a sub client with exact the same name as the namespace
-      // in csharp, this will cause a conflict between the namespace and the class name
-      sdkContext.logger.reportDiagnostic({
-        code: "client-namespace-conflict",
-        format: { clientNamespace: client.clientNamespace, clientName },
-        target: client.__raw.type ?? NoTarget,
-      });
-    }
 
     return {
       Name: clientName,
-      ClientNamespace: client.clientNamespace,
+      Namespace: client.namespace,
       Summary: client.summary,
       Doc: client.doc,
       Operations: client.methods

packages/http-client-csharp/emitter/src/type/input-client.ts

@@ -8,7 +8,7 @@ import { Protocols } from "./protocols.js";
 
 export interface InputClient {
   Name: string;
-  ClientNamespace: string;
+  Namespace: string;
   Summary?: string;
   Doc?: string;
   Operations: InputOperation[];