Stop populating rc_cur_time

Per the bug report this column is due to be dropped in 1.24 and
is not used in queries in 1.23.

Change-Id: I87c970df5dbc4e3e239854381d29a5a05340ac16
Related: I48989aceec31019f0b6c98aaeafaf60e975244df
Bug: 40667
Merge "Stop populating rc_cur_time"