title: Drop table in old version of SQLite where IF EXISTS is not supported
body: <p>My version of SQLite does not support the <code>IF EXISTS</code> operator. How can I drop a table which may or may not exist without getting an error slapped at me?</p>
  
  <p>I can't update the version on a live application right now, so I cannot use a SQLite version that supports <code>IF EXISTS</code>.</p>