fix: remove redundant Cloudflare wait from _auto_login (already done in start)

deepseek_browser.py

@@ -139,7 +139,6 @@ class DeepSeekBrowser:
 
     async def _auto_login(self):
         logger.info("Logging in as %s...", self.email)
-        await self._wait_for_cloudflare()
 
         try:
             pwd_tab = self.page.locator('text="密码登录"').first