fix: keep exchange API only in env config, remove from system settings.

EOF

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

lib/instance/instance_display_prefs_lib.py

@@ -21,7 +21,6 @@ DEFAULT_INSTANCE_DISPLAY: dict[str, bool] = {
     "show_settings_transfer": True,
     "show_settings_export": True,
     "show_settings_password": True,
-    "show_settings_exchange_api": True,
     "show_settings_options_swap": True,
     "show_settings_options_transfer": True,
 }
@@ -40,7 +39,6 @@ DISPLAY_LABELS: dict[str, str] = {
     "show_settings_transfer": "资金划转",
     "show_settings_export": "数据导出",
     "show_settings_password": "账户密码修改",
-    "show_settings_exchange_api": "交易所 API",
     "show_settings_options_swap": "期权币种兑换",
     "show_settings_options_transfer": "期权资金划转",
 }
@@ -120,7 +118,6 @@ def display_meta_for_ui() -> list[dict[str, Any]]:
         "show_nav_hedge_plan",
     ]
     settings_keys = [
-        "show_settings_exchange_api",
         "show_settings_transfer",
         "show_settings_export",
         "show_settings_password",