deprecate isAckPayloadAvailable() nRF24#664

RF24.h

@@ -547,16 +547,6 @@ class RF24 {
      */
     void writeAckPayload(uint8_t pipe, const void* buf, uint8_t len);
 
-    /**
-     * Determine if an ack payload was received in the most recent call to
-     * write(). The regular available() can also be used.
-     *
-     * Call read() to retrieve the ack payload.
-     *
-     * @return True if an ack payload is available.
-     */
-    bool isAckPayloadAvailable(void);
-
     /**
      * Call this when you get an interrupt to find out why
      *
@@ -1129,6 +1119,16 @@ class RF24 {
      */
     void enableDynamicAck();
 
+    /**
+     * Determine if an ack payload was received in the most recent call to
+     * write(). The regular available() can also be used.
+     *
+     * Call read() to retrieve the ack payload.
+     *
+     * @return True if an ack payload is available.
+     */
+    bool isAckPayloadAvailable(void);
+
 private:
 
     /**@}*/