Update Technical Committee office hours new time

Update office hours time as per
- http://lists.openstack.org/pipermail/openstack-discuss/2020-August/016883.html

Also update the Chair for TC meeting and office hours.

Change-Id: I55568364dc60a1f90784aabebcd97f709e476c58

meetings/technical-committee-meeting.yaml

@@ -7,7 +7,7 @@ schedule:
     irc:        openstack-tc
     frequency:  first-thursday
     start_date: 20181004
-chair:  Doug Hellmann (dhellmann)
+chair:  Mohammed Naser (mnaser)
 description:  >
   The OpenStack Technical Committee is one of the governing bodies of the
   OpenStack project. It is an elected group that represents the

meetings/technical-committee-office-hours.yaml

@@ -1,22 +1,17 @@
 project:  Technical Committee Office hours
 meeting_id: tc
 schedule:
-  - time:       '0900'
+  - time:       '0100'
     day:        Tuesday
     irc:        openstack-tc
     frequency:  weekly
     start_date: 20170616
-  - time:       '0100'
+  - time:       '1500'
     day:        Wednesday
     irc:        openstack-tc
     frequency:  weekly
     start_date: 20170616
-  - time:       '1500'
-    day:        Thursday
-    irc:        openstack-tc
-    frequency:  weekly
-    start_date: 20170616
-chair:  Doug Hellmann (dhellmann)
+chair:  Mohammed Naser (mnaser)
 description:  >
   The OpenStack Technical Committee is one of the governing bodies of the
   OpenStack project. It is an elected group that represents the