Remove reference to cc3000

Author: jwcooper

library.properties

@@ -2,7 +2,7 @@ name=Adafruit MQTT Library
 version=0.17.0
 author=Adafruit
 maintainer=Adafruit <info@adafruit.com>
-sentence=MQTT library that supports the CC3000, FONA, ESP8266, Yun, and generic Arduino Client hardware.
+sentence=MQTT library that supports the FONA, ESP8266, Yun, and generic Arduino Client hardware.
 paragraph=Simple MQTT library that supports the bare minimum to publish and subscribe to topics.
 category=Communication
 url=https://github.com/adafruit/Adafruit_MQTT_Library