After developing my site I wanted to reset the "post views".
Since there's no setting for zero-ing the post views already in the table, I deactivated and un-installed the plugin.
After closing the browser session and waiting some hours, I re-installed the plugin, expecting the view totals to be zero.
The post view count was exactly as it was before I'd removed the plugin.
It therefore seems that the function to drop the table when the plug-in is deleted via the admin interface isn't working.