Merge pull request #475 from open-rpc/fix/dependabot-badge

fix: remove dependabot badge from readme

Author: BelfordZ

README.md

@@ -3,7 +3,6 @@
   <span>
     <img alt="CircleCI branch" src="https://img.shields.io/circleci/project/github/open-rpc/test-coverage/master.svg">
     <img src="https://codecov.io/gh/open-rpc/test-coverage/branch/master/graph/badge.svg" />
-    <img alt="Dependabot status" src="https://api.dependabot.com/badges/status?host=github&repo=open-rpc/test-coverage" />
     <img alt="npm" src="https://img.shields.io/npm/dt/@open-rpc/test-coverage.svg" />
     <img alt="GitHub release" src="https://img.shields.io/github/release/open-rpc/test-coverage.svg" />
     <img alt="GitHub commits since latest release" src="https://img.shields.io/github/commits-since/open-rpc/test-coverage/latest.svg" />