backports: remove DRM shrinkers patches

<sad_trombone>This did not make it to v3.11</sad_trombone>

commit 84292b549bf48f80d470215b357179ea13d64a35
Author: Dave Chinner <dchinner@redhat.com>
Date:   Wed Jul 3 10:19:58 2013 +1000

    drivers: convert shrinkers to new count/scan API

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
2 files changed