Removing downloads badge (#872)

Removing badge until badges/shields#6766 is fixed.

README.md

@@ -3,7 +3,6 @@
 </p>
 
 [![GoReportCard](https://goreportcard.com/badge/github.com/aquasecurity/tfsec)](https://goreportcard.com/report/github.com/aquasecurity/tfsec)
-[![GitHub All Releases](https://img.shields.io/github/downloads/aquasecurity/tfsec/total)](https://github.com/aquasecurity/tfsec/releases)
 [![Join Our Slack](https://img.shields.io/badge/Slack-Join-green)](https://join.slack.com/t/tfsec/shared_invite/zt-o6c7mgoj-eJ1sLDv595sKiP5OPoHJww)
 [![Docker Build](https://img.shields.io/docker/v/tfsec/tfsec?label=docker)](https://hub.docker.com/r/tfsec/tfsec)
 [![Homebrew](https://img.shields.io/badge/dynamic/json.svg?url=https://formulae.brew.sh/api/formula/tfsec.json&query=$.versions.stable&label=homebrew)](https://formulae.brew.sh/formula/tfsec)