qa/suites/krbd: exclude ext4/002

ext4/002 exercises obsolete EXT4_EOFBLOCKS_FL feature that was removed
in kernel 5.7 and therefore always fails.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

qa/suites/krbd/singleton/tasks/rbd_xfstests.yaml

@@ -25,6 +25,7 @@ tasks:
         - generic/045
         - generic/046
         - generic/223
+        - ext4/002  # removed upstream
         - ext4/304
         - generic/388
         - generic/405