Update m5stack_timer_camera_x.md / remove Camera tag and added warning

Removing camra tag and adding warning for camera use as per adafruit/circuitpython#9907

Author: paluigi

_board/m5stack_timer_camera_x.md

@@ -14,7 +14,6 @@ features:
   - Wi-Fi
   - USB-C
   - Bluetooth/BTLE
-  - Camera
   - Battery Charging
 ---
 
@@ -24,6 +23,8 @@ You can use the built-in RTC (BM8563) to keep track of time to create custom, sp
 
 A friendly heads-up: The low-power power management used by the Timer Camera series is different from the CORE and StickC devices. When in use, the PWR button is used as a power-on button (long press 2 seconds). If you need to shut down the device, use the software API or press the Reset button on the PCB.
 
+**Note: as 2025-07-07 there is no documented way to use the camera. Examples using `espcamera` produce initialization errors.** 
+
 ### Features
 - ESP32-based
 - Built-in RTC