code: static void drop(CallInfo callInfo, DB db, String tableName) {
      String sql = String.format("DROP TABLE %s", tableName);
      db.access(callInfo, () -> {
        db.logSetup(callInfo, sql);
        try (WrappedStatement ws = db.compile(sql)) {
          PreparedStatement dropStmt = ws.getStatement();
          dropStmt.execute();
        }
        return 0; 
      });
    }
docs: Drop a table.
  @param callInfo Call info.
  @param db Database
  @param tableName  Table name.