Remove comments to fix syntax errors

scripts-available/CDB_Groups_API.sql

@@ -201,9 +201,9 @@ $$
     import base64
 
     data_to_encode = '%s:%s' % (username, password)
-    if sys.version_info[0] < 3: -- python 2.x
+    if sys.version_info[0] < 3:
         data_encoded = base64.encodestring(data_to_encode)
-    else: -- python 3.x
+    else:
         data_encoded = base64.b64encode(data_to_encode.encode()).decode()
 
     data_encoded = data_encoded.replace('\n', '')