remove the diagnostic, will add it into csharp side later

Author: ArcturusZhang

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

@@ -92,19 +92,6 @@ 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.namespace.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: { namespace: client.namespace, clientName },
-        target: client.__raw.type ?? NoTarget,
-      });
-    }
 
     return {
       Name: clientName,