ehea: Remove some unused definitions

The queue macros are many levels deep and it makes it harder to
work your way through them when many of the versions are unused.
Remove the unused versions.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>