org-export-with-timestamps

org-export-with-timestamps is a variable defined in `ox.el'.
Its value is

t

Documentation:
Non nil means allow timestamps in export.

It can be set to any of the following values:
t export all timestamps.
`active' export active timestamps only.
`inactive' export inactive timestamps only.
nil do not export timestamps

This only applies to timestamps isolated in a paragraph
containing only timestamps. Other timestamps are always
exported.

This option can also be set with the OPTIONS keyword, e.g.
"<:nil".

You can customize this variable.