error when using Blinka caused by gc.mem_free()

[Jayguitar]

Using Blinka to run NASA image of the day example on a pitft results in the following error:
response = self.network.fetch(self.url, timeout=timeout) File "/home/pi/.local/lib/python3.7/site-packages/adafruit_portalbase/network.py", line 429, in fetch print("Free mem: ", gc.mem_free()) # pylint: disable=no-member AttributeError: module 'gc' has no attribute 'mem_free'

I think because gc.mem_free() is a circuitpython specific attribute and not present in Cpython gc module

[makermelissa]

Thanks!