Replicated events have time associated with them from originating
node which will be used for commit timestamp. Associated time can
be set in past before event is even applied.

For WSREP replication we don't need to use time information from
event.

Addressed review comments:
	  Jan Lindström <jan.lindstrom@galeracluster.com>
Signed-off-by: Julius Goryavsky <julius.goryavsky@mariadb.com>