staging: ccree: remove func name from log messages

The SSI_LOG macros already add __func__ to log messages, so remove
log message that add them a second time in the log message itself.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>