[seeker] remove Revision3 extractors and fix extraction

youtube_dl/extractor/extractors.py

@@ -932,10 +932,6 @@ from .rentv import (
 from .restudy import RestudyIE
 from .reuters import ReutersIE
 from .reverbnation import ReverbNationIE
-from .revision3 import (
-    Revision3EmbedIE,
-    Revision3IE,
-)
 from .rice import RICEIE
 from .rmcdecouverte import RMCDecouverteIE
 from .ro220 import Ro220IE