code: public void clearPostTerm(final long postId, final long taxonomyTermId) throws SQLException {
        Connection conn = null;
        PreparedStatement stmt = null;
        Timer.Context ctx = metrics.postTermsClearTimer.time();
        try {
           conn = connectionSupplier.getConnection();
           stmt = conn.prepareStatement(clearPostTermSQL);
           stmt.setLong(1, postId);
           stmt.setLong(2, taxonomyTermId);
           stmt.executeUpdate();
        } finally {
           ctx.stop();
           SQLUtil.closeQuietly(conn, stmt);
        }
     }
docs: Clears a single taxonomy term associated with a post.
  @param postId The post id.
  @param taxonomyTermId The taxonomy term id.
  @throws SQLException on database error.