Removed disabled java9 badge

Author: JonathanParrilla

README.md

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 ![Build Test Deploy master](https://github.com/swagger-api/swagger-parser/workflows/Build%20Test%20Deploy%20master/badge.svg?branch=master)
 
-[![Build Status](https://jenkins.swagger.io/view/OSS%20-%20Java/job/oss-swagger-parser-v2-java9/badge/icon?subject=jenkins%20build%20-%20java%209)](https://jenkins.swagger.io/view/OSS%20-%20Java/job/oss-swagger-parser-v2-java9/)
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 ## Overview 
 This is the Swagger Parser project, which reads OpenAPI definitions into current Java POJOs.  It also provides a simple framework to add additional converters from different formats into the Swagger objects, making the entire toolchain available.