Remove HMCLCore usage instructions

HMCLCore/src/main/java/org/jackhuang/hmcl/auth/AccountBuilder.java

@@ -1,54 +0,0 @@
-/*
- * Hello Minecraft! Launcher.
- * Copyright (C) 2017  huangyuhui <huanghongxun2008@126.com>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see {http://www.gnu.org/licenses/}.
- */
-package org.jackhuang.hmcl.auth;
-
-import java.util.Objects;
-
-public final class AccountBuilder<T extends Account> {
-    private CharacterSelector selector = CharacterSelector.DEFAULT;
-    private String username;
-    private String password = null;
-    private Object additionalData = null;
-
-    public AccountBuilder() {
-    }
-
-    public AccountBuilder<T> setSelector(CharacterSelector selector) {
-        this.selector = Objects.requireNonNull(selector);
-        return this;
-    }
-
-    public AccountBuilder<T> setUsername(String username) {
-        this.username = Objects.requireNonNull(username);
-        return this;
-    }
-
-    public AccountBuilder<T> setPassword(String password) {
-        this.password = password;
-        return this;
-    }
-
-    public AccountBuilder<T> setAdditionalData(Object additionalData) {
-        this.additionalData = additionalData;
-        return this;
-    }
-
-    public T create(AccountFactory<T> factory) throws AuthenticationException {
-        return factory.create(selector, Objects.requireNonNull(username), password, additionalData);
-    }
-}