Drop Python 2 (1/n): remove unicode string and url_utils

searx/engines/photon.py

@@ -11,8 +11,8 @@
 """
 
 from json import loads
+from urllib.parse import urlencode
 from searx.utils import searx_useragent
-from searx.url_utils import urlencode
 
 # engine dependent config
 categories = ['map']