Does not use additional youtube oauth2 to get token

We can use the google accounts token to authenticate when extracting video links from youtube and therefore do not need to get an additional token from youtube.

src/OAuth.py

@@ -94,23 +94,15 @@ def get_new_token(self):  # pragma: no cover
 			return data['refresh_token'], 1
 		return None, self.retry_interval + 2
 
-	def get_token(self, url, refresh_token):
+	def get_access_token(self, refresh_token):
+		url = 'https://accounts.google.com/o/oauth2/token'
 		data = {'client_id': CLIENT_ID,
 				'client_secret': CLIENT_SECRET,
 				'refresh_token': refresh_token,
 				'grant_type': 'refresh_token'}
-		return self.get_oauth_response(url, data)
-
-	def get_access_token(self, refresh_token):
-		url = 'https://accounts.google.com/o/oauth2/token'
-		data = self.get_token(url, refresh_token)
-		if 'access_token' in data:
-			url = 'https://www.youtube.com/o/oauth2/token'
-			yt_data = self.get_token(url, refresh_token)
-			if 'token_type' in yt_data and 'access_token' in yt_data:
-				yt_auth = '%s %s' % (yt_data['token_type'], yt_data['access_token'])
-			else:
-				yt_auth = None
-			return data['access_token'], yt_auth
+		res = self.get_oauth_response(url, data)
+		if 'access_token' in res:
+			yt_auth = '%s %s' % (res['token_type'], res['access_token']) if 'token_type' in res else None
+			return res['access_token'], yt_auth
 		print('[OAuth] Error in get access token')
 		return None, None