Revert "Propagate user_prompt_id to GenerateConentRequest for logging" (#5007)

packages/core/src/code_assist/converter.ts

@@ -32,7 +32,6 @@ import {
 export interface CAGenerateContentRequest {
   model: string;
   project?: string;
-  user_prompt_id?: string;
   request: VertexGenerateContentRequest;
 }
 
@@ -116,14 +115,12 @@ export function fromCountTokenResponse(
 
 export function toGenerateContentRequest(
   req: GenerateContentParameters,
-  userPromptId: string,
   project?: string,
   sessionId?: string,
 ): CAGenerateContentRequest {
   return {
     model: req.model,
     project,
-    user_prompt_id: userPromptId,
     request: toVertexGenerateContentRequest(req, sessionId),
   };
 }