MAINTAINERS: drop 1.1 from the releases that i maintain

There seems to be no need to continue maintaining it, people can easily
upgrade to 1.2
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

MAINTAINERS

@@ -458,7 +458,6 @@ Releases
 
 2.0                                     Michael Niedermayer
 1.2                                     Michael Niedermayer
-1.1                                     Michael Niedermayer
 
 If you want to maintain an older release, please contact us