[ARM] pxa: removing dead CORGI_SSP_DEPRECATED

CORGI_SSP_DEPRECATED doesn't exist in Kconfig, therefore removing all
references for it from the source code.

Signed-off-by: Christoph Egger <siccegge@cs.fau.de>
Acked-by: Kristoffer Ericson <kristoffer.ericson@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>