Remove lower bound for start time state query
With the new query in #133553 we do not need a lower bound
on the search since it will always use index now and we
always want the newest value in the index before the
provided timestamp. The lower bound is redudant at this
point as it will always be older than the oldest
time point for the state. It only made sense when
the query would have had to examine a time window
of states instead of doing an index only search.
3d20c5c5d6