mei: Remove unused functions

mei: Remove unused functions

The following functions have been in the mei code for
a long time but have never been used.

mei_txe_setup_satt2() was added in 2014 by
commit 32e2b59fca2c ("mei: txe: add hw-txe.c")

mei_me_cl_rm_by_uuid_id() was added in 2015 by
commit 79563db9ddd3 ("mei: add reference counting for me clients")

mei_cldev_uuid() was added in 2015 by
commit baeacd037697 ("mei: bus: export uuid and protocol version to mei_cl
bus drivers")

mei_cldev_recv_nonblock() was added in 2016 by
commit 076802d00615 ("mei: bus: enable non-blocking RX")
it is the only user of mei_cldev_recv_nonblock_vtag().

Remove them.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Alexander Usyskin <alexander.usyskin@intel.com>
Link: https://lore.kernel.org/r/20250130012654.255119-1-linux@treblig.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>