[misc] removing unused code

Author: rusher

lib/cmd/change-user.js

@@ -1,6 +1,5 @@
 "use strict";
 
-const Errors = require("../misc/errors");
 const Iconv = require("iconv-lite");
 const Capabilities = require("../const/capabilities");
 const NativePasswordAuth = require("./handshake/auth/native_password_auth");
@@ -134,50 +133,6 @@ class ChangeUser extends Handshake {
     connOpts.password = opt.password;
   }
 
-  /**
-   * Read ping response packet.
-   * packet can be :
-   * - an ERR_Packet
-   * - a OK_Packet
-   *
-   * @param packet  query response
-   * @param out     output writer
-   * @param opts    connection options
-   * @param info    connection info
-   * @returns {null}
-   */
-  readChangeUserResponsePacket(packet, out, opts, info) {
-    switch (packet.peek()) {
-      //*********************************************************************************************************
-      //* OK response
-      //*********************************************************************************************************
-      case 0x00:
-        packet.skip(1); //skip header
-        info.status = packet.readUInt16();
-        if (this.onResult) process.nextTick(this.onResult, null);
-        this.emit("end");
-        return null;
-
-      //*********************************************************************************************************
-      //* ERROR response
-      //*********************************************************************************************************
-      case 0xff:
-        const err = packet.readError(info);
-        this.throwError(err);
-        return null;
-
-      default:
-        const errUnexpected = Errors.createError(
-          "unexpected packet",
-          false,
-          info,
-          "42000",
-          Errors.ER_CHANGE_USER_BAD_PACKET
-        );
-        this.throwError(errUnexpected);
-        return null;
-    }
-  }
 }
 
 function writeParam(out, val, encoding) {