remove unused variable

Author: TahirAliWH

src/controllers/ChatController.ts

@@ -333,7 +333,7 @@ export class ChatController {
 
           // Get knowledge base search results if available
           const aiService = (this.chatManager as any).aiService;
-          aiService.setResponseMode(responseMode);
+
           let knowledgeResults: string | null = null;
 
           // Get conversation to extract company_id for knowledge base search

src/services/AIService.ts

@@ -17,7 +17,6 @@ export class AIService {
   private navigationLinks: NavigationLink[];
   private knowledgeBase: string;
   private knowledgeBaseService?: KnowledgeBaseService;
-  private responseMode: ResponseMode;
 
   constructor(config: AIServiceConfig) {
     this.config = config;
@@ -32,19 +31,13 @@ export class AIService {
     }
 
     this.systemPrompt = this.buildSystemPrompt();
-    this.responseMode = RESPONSE_MODES.DEVELOPER;
   }
 
   setKnowledgeBaseService(service: KnowledgeBaseService): void {
     this.knowledgeBaseService = service;
     this.systemPrompt = this.buildSystemPrompt();
   }
 
-  setResponseMode(mode: ResponseMode): void {
-    this.responseMode = mode;
-  }
-
-
   private buildSystemPrompt(): string {
     const orgName = this.config.organizationName || 'Your Organization';
     const assistantName = this.config.assistantName || `${orgName} AI Assistant`;