Remove ps6000aSetExternalClock functions from ps6000a.py as the function isn't a part of the API. Any reference in the programmer's guide is incorrect.

Author: neil.hamilton

picosdk/ps6000a.py

@@ -815,11 +815,3 @@ def __init__(self):
         PicoTemperatureSensorInteractions    callback
     ); """
 ps6000a.make_symbol("_SetTemperatureSensroInteractionCallback", "ps6000aSetTemperatureSensorInteractionCallback", c_uint32, [c_int16, c_void_p], doc)
-
-# doc = """ PICO_STATUS ps6000aSetExternalClock
-    # (
-        # int16_t    handle,
-        # PICO_EXTERNAL_FREQUENCY    frequency,
-        # int16_t    threshold
-    # ); """
-# ps6000a.make_symbol("_SetExternalClock", "ps6000aSetExternalClock", c_uint32, [c_int16, c_uint32, c_int16], doc)