staging:cxt1e1:remove unused code with #if 0

The functions musycc_del_chan and musycc_del_chan_stats
are not being used at the moment and may not be required.
Remove them for now (with #if 0) till it is decided whether
it is really required.

Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>