Update README.md

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README.md

@@ -34,15 +34,3 @@ The project consists of 3 parts:
     3. These two methods must be overridden if self-defined object is used as the key of Map.
    Note: String can be used as the key of Map since these two methods have been rewritten.
 
-## Join us
-If you have any questions or comments, please contact junlie by email at caikang.ck@alibaba-inc.com, and please join us to make project P3C perfect for more programmers.
-
-Please follow our WeChat official account as ali_yunxiao below:
-
-![](https://gw.alicdn.com/tfscom/TB1TrNcXjv85uJjSZFNXXcJApXa.png)
-
-### 2020 阿里春季招聘—欢迎投递简历
-
-[校招详情](https://www.nowcoder.com/discuss/385514)
-
-[社招详情](https://job.alibaba.com/zhaopin/position_detail.htm?trace=qrcode_share&positionCode=GP605219)