remove docker build badge

Author: Qasim Sarfraz

README.md

@@ -1,6 +1,4 @@
 <p align="left">
-    <a href="https://hub.docker.com/r/esailors/aws-ecr-http-proxy/builds" alt="Build">
-        <img src="https://img.shields.io/docker/cloud/build/esailors/aws-ecr-http-proxy" /></a>
     <a href="https://hub.docker.com/r/esailors/aws-ecr-http-proxy" alt="Pulls">
         <img src="https://img.shields.io/docker/pulls/esailors/aws-ecr-http-proxy" /></a>
     <a href="https://www.esailors.de" alt="Maintained">