remove videoprefix from config, defined by backend

pandora/config.0xdb.jsonc

@@ -780,8 +780,7 @@
         "id": "0xdb",
         "name": "0xDB",
         "sendReferrer": false,
-        "url": "0xDB.org",
-        "videoprefix": ""
+        "url": "0xDB.org"
     },
     /*
     */

pandora/config.indiancinema.jsonc

@@ -795,8 +795,7 @@
         "id": "indiancinema",
         "name": "Indiancine.ma",
         "sendReferrer": true,
-        "url": "indiancine.ma",
-        "videoprefix": ""
+        "url": "indiancine.ma"
     },
     /*
     */

pandora/config.padma.jsonc

@@ -681,8 +681,7 @@
         "id": "padma",
         "name": "Pad.ma",
         "sendReferrer": true,
-        "url": "pad.ma",
-        "videoprefix": ""
+        "url": "pad.ma"
     },
     /*
     */

pandora/config.pandora.jsonc

@@ -685,8 +685,6 @@ examples (config.SITENAME.jsonc) that are part of this pan.do/ra distribution.
     "site" contains various settings for this instance. In "email", "contact"
     if the address in the contact form (to), "system" is the address used by
     the system (from).
-    Note that "videoprefix" (subdomains to serve the video files from) gets
-    populated automatically and can be left empty.
     */
     "site": {
         "description": "This is a demo of pan.do/ra - a free, open source media archive. It allows you to manage large, decentralized collections of video, to collaboratively create metadata and time-based annotations, and to serve your archive as a cutting-edge web application.",
@@ -702,8 +700,7 @@ examples (config.SITENAME.jsonc) that are part of this pan.do/ra distribution.
         "id": "pandora",
         "name": "Demo",
         "sendReferrer": true,
-        "url": "pandora.local",
-        "videoprefix": ""
+        "url": "pandora.local"
     },
     /*
     "sitePages" defines the sections of the main site dialog. If "news" is

pandora/settings.py

@@ -192,7 +192,8 @@ POSTER_PRECEDENCE = ()
 
 USE_IMDB = False
 
-#if you set VIDEO_PREFIX make sure cookies work accros subsomains
+#If you set VIDEO_PREFIX make sure cookies work accros subsomains
+#by setting SESSION_COOKIE_DOMAIN to ".domain.tld"
 VIDEO_PREFIX=''
 #VIDEO_PREFIX = '//video{uid}.example.com'
 MEDIA_PREFIX=''