MAINTAINERS: remove unmaintained releases

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
diff --git a/MAINTAINERS b/MAINTAINERS
index b70f24f..d65b749 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -547,8 +547,6 @@
 2.7                                     Michael Niedermayer
 2.6                                     Michael Niedermayer
 2.5                                     Michael Niedermayer
-2.4                                     Michael Niedermayer
-2.2                                     Michael Niedermayer
 
 If you want to maintain an older release, please contact us