Revert "Update README.md"

This reverts commit 3b36f82d24.

README.md

@@ -23,22 +23,6 @@ Java解析、生成Excel比较有名的框架有Apache poi、jxl。但他们都
 ## 维护者
 玉霄、庄家钜、怀宇
 ## 快速开始
-### 引入项目
-Maven
-```java
-<!-- https://mvnrepository.com/artifact/com.alibaba/easyexcel -->
-<dependency>
-    <groupId>com.alibaba</groupId>
-    <artifactId>easyexcel</artifactId>
-    <version>2.1.0-beta4</version>
-</dependency>
-```
-Gradle
-```java
-// https://mvnrepository.com/artifact/com.alibaba/easyexcel
-compile group: 'com.alibaba', name: 'easyexcel', version: '2.1.0-beta4'
-```
-
 ### 读Excel
 DEMO代码地址：[https://github.com/alibaba/easyexcel/blob/master/src/test/java/com/alibaba/easyexcel/demo/read/ReadTest.java](/src/test/java/com/alibaba/easyexcel/test/demo/read/ReadTest.java)