Places: region parameter no longer needed in Nearby Search

[NicoSerranoP]

The library documentation specifies that a region parameter can be passed in the places_nearby method (check it out here).

Looking at the code, you can see that places_nearby never uses the region parameter but it is specified in the comments section (check it out in line 270).

I notice this problem because I was blindly following the documentation trying to invoke the places_nearby method. If you input a specific region (ex: region="EC"), python throws a problem:

TypeError: places_nearby() got an unexpected keyword argument 'region'

I think the only problem is the region part in the comment section that is making it appear in the documentation and misleading newbie programmers like me to get an unexpected type error. I suggest just deleting that line and recompiling the documentation. I could submit a pull request but I was wondering if my idea is correct or if I need extra permission to do so.

Steps to reproduce

1. Try to use the googlemaps.Client.places_nearby method by inputting a specific region.

Code example

result = gmaps_client.places_nearby(
    location = (-33.86746, 151.207090),
    radius = 100, # in meters
    region = "EC", 
    keyword = "something related to the business",
    language = "es-419",
    type = "liquor_store", 
    page_token = None
)

Best wishes,

Nico