refactor: drop unused dev flag from getRelayUrl

experiment-tag has no local-dev CDN detection; use RelayClient's relayUrl
constructor param for manual testing against local dynamic-script.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: tyiuhc

packages/experiment-tag/src/behavioral-targeting/relay-client.ts

@@ -9,10 +9,7 @@ import {
   RelayResponse,
 } from './relay-protocol';
 
-export function getRelayUrl(apiKey: string, dev = false): string {
-  if (dev) {
-    return `http://localhost:3036/script/${apiKey}.relay.html`;
-  }
+export function getRelayUrl(apiKey: string): string {
   return `https://cdn.amplitude.com/script/${apiKey}.relay.html`;
 }
 

packages/experiment-tag/test/behavioral-targeting/relay-client.test.ts

@@ -398,12 +398,6 @@ describe('RelayClient', () => {
 });
 
 describe('getRelayUrl', () => {
-  test('returns local dev relay url', () => {
-    expect(getRelayUrl('abc123', true)).toBe(
-      'http://localhost:3036/script/abc123.relay.html',
-    );
-  });
-
   test('returns production relay url', () => {
     expect(getRelayUrl('abc123')).toBe(
       'https://cdn.amplitude.com/script/abc123.relay.html',