code: public static <T> String getCustomDeleteSQL(Class<T> clazz, String postSql) {
  		StringBuilder sql = new StringBuilder();
  		
  		Table table = DOInfoReader.getTable(clazz);
  		
  		sql.append("DELETE FROM ");
  		sql.append(getTableName(table));
  		
  		sql.append(autoSetSoftDeleted(postSql, clazz));
  		
  		return sql.toString();
  	}
docs: 获得自定义删除SQL
  @param clazz
  @param postSql
  @return