protected void removeCurrentRow() {
        ((Row)getCurrentRow()).setDeleted();
        rvh.remove(cursorPos - 1);
        --numRows;
    }
Removes the row on which the cursor is positioned.
<p>
This is a implementation only method and is not required as a standard
implementation of the <code>CachedRowSet</code> interface.

@throws SQLException if the cursor is positioned on the insert
           row
src/main/java/org/replicadb/rowset/sun/rowset/CachedRowSetImpl.java