remove Atcontrol from readme

Author: brentru

README.rst

@@ -21,12 +21,7 @@ This driver depends on:
 
 * `Adafruit CircuitPython <https://github.com/adafruit/circuitpython>`_
 * `Adafruit CircuitPython SimpleIO <https://github.com/adafruit/Adafruit_CircuitPython_SimpleIO>`_
-
-You'll also need a library to communicate with an ESP32 as a coprocessor using a WiFiManager object. This library supports connecting an ESP32 using either SPI or UART.
-
-* SPI: `Adafruit CircuitPython ESP32SPI <https://github.com/adafruit/Adafruit_CircuitPython_ESP32SPI>`_
-
-* UART: `Adafruit CircuitPython ESP_ATcontrol <https://github.com/adafruit/Adafruit_CircuitPython_ESP_ATcontrol>`_
+* `Adafruit CircuitPython ESP32SPI <https://github.com/adafruit/Adafruit_CircuitPython_ESP32SPI>`_
 
 Please ensure all dependencies are available on the CircuitPython filesystem.
 This is easily achieved by downloading