Removed deprecated code

satcfdi/sat_requests_utils.py

@@ -1,19 +1,24 @@
 # Ciphers compatible with SAT Services
+import ssl
+
+import certifi
 from requests.adapters import HTTPAdapter
-from urllib3.util import create_urllib3_context
 
 CIPHERS = (
     'ECDHE+AESGCM:ECDHE+CHACHA20:DHE+AESGCM:DHE+CHACHA20:ECDH+AESGCM:'
     'DH+AESGCM:ECDH+AES:DH+AES:RSA+AESGCM:RSA+AES:!aNULL:!eNULL:!MD5:!DSS'
     ':HIGH:!DH'
 )
 
+ssl_context = ssl.create_default_context(cafile=certifi.where())
+ssl_context.set_ciphers(CIPHERS)
+
 
 class SSLAdapter(HTTPAdapter):
     def init_poolmanager(self, *args, **kwargs):
-        kwargs['ssl_context'] = create_urllib3_context(ciphers=CIPHERS)
+        kwargs['ssl_context'] = ssl_context
         return super().init_poolmanager(*args, **kwargs)
 
     def proxy_manager_for(self, *args, **kwargs):
-        kwargs['ssl_context'] = create_urllib3_context(ciphers=CIPHERS)
+        kwargs['ssl_context'] = ssl_context
         return super().proxy_manager_for(*args, **kwargs)