LU-9679 nrs: remove ts_opcodes bitmap.

LU-9679 nrs: remove ts_opcodes bitmap.

This bitmap is never used.  There is one place that tests if it has
been allocated or not, but that place can easily be satisfied by a
strcmp().

So discard the field.

Signed-off-by: Mr NeilBrown <neilb@suse.de>
Change-Id: I97ca6753236f106d1865d514034b72a679f9b28a
Reviewed-on: https://review.whamcloud.com/38975
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Arshad Hussain <arshad.super@gmail.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>