Removing non-deterministic tests from events_scheduling test.

mysql-test/r/events_scheduling.result:
  Result change.
mysql-test/t/events_scheduling.test:
  Removing a test that only confirms that event scheduling is
  inexact, hence causing sporadic failures on loaded machines.

mysql-test/r/events_scheduling.result

@@ -78,11 +78,6 @@ FROM INFORMATION_SCHEMA.EVENTS
 WHERE EVENT_SCHEMA=DATABASE() AND EVENT_NAME='event_2';
 IF(TIME_TO_SEC(TIMEDIFF(ENDS,STARTS))=6, 'OK', 'ERROR')
 OK
-SELECT IF(LAST_EXECUTED-ENDS <= 0, 'OK', 'ERROR')
-FROM INFORMATION_SCHEMA.EVENTS
-WHERE EVENT_SCHEMA=DATABASE() AND EVENT_NAME='event_2';
-IF(LAST_EXECUTED-ENDS <= 0, 'OK', 'ERROR')
-OK
 "Already dropped because ended. Therefore an error."
 DROP EVENT event_3;
 ERROR HY000: Unknown event 'event_3'

mysql-test/t/events_scheduling.test

@@ -87,10 +87,6 @@ SELECT IF(TIME_TO_SEC(TIMEDIFF(ENDS,STARTS))=6, 'OK', 'ERROR')
 FROM INFORMATION_SCHEMA.EVENTS
 WHERE EVENT_SCHEMA=DATABASE() AND EVENT_NAME='event_2';
 
-SELECT IF(LAST_EXECUTED-ENDS <= 0, 'OK', 'ERROR')
-FROM INFORMATION_SCHEMA.EVENTS
-WHERE EVENT_SCHEMA=DATABASE() AND EVENT_NAME='event_2';
-
 --echo "Already dropped because ended. Therefore an error."
 --error ER_EVENT_DOES_NOT_EXIST
 DROP EVENT event_3;