en: switching_hub: Remove description for Table-miss flow entry of OpenFlow1.3
en: switching_hub: Remove description for Table-miss flow entry of OpenFlow1.3

OVS has full support for the Table-miss flow entry of OpenFlow1.3 in v2.1.0.
This patch removes description for Table-miss flow entry of OpenFlow1.3.

Signed-off-by: Shinpei Muraoka <154d36ff5308ea67e46435bebcfb51dcc823bd4d@gmail.com>

osrg/ryu-book,iwaseyusuke/ryu-book,iwaseyusuke/ryu-book,osrg/ryu-book