fix: remove legacy CI badge from readme (#171)

Author: ocofaigh

README.md

@@ -3,7 +3,6 @@
 # Terraform IBM Observability agents module
 
 [![Stable (With quality checks)](https://img.shields.io/badge/Status-Stable%20(With%20quality%20checks)-green)](https://terraform-ibm-modules.github.io/documentation/#/badge-status)
-[![Build status](https://github.com/terraform-ibm-modules/terraform-ibm-observability-agents/actions/workflows/ci.yml/badge.svg)](https://github.com/terraform-ibm-modules/terraform-ibm-observability-agents/actions/workflows/ci.yml)
 [![pre-commit](https://img.shields.io/badge/pre--commit-enabled-brightgreen?logo=pre-commit&logoColor=white)](https://github.com/pre-commit/pre-commit)
 [![latest release](https://img.shields.io/github/v/release/terraform-ibm-modules/terraform-ibm-observability-agents?logo=GitHub&sort=semver)](https://github.com/terraform-ibm-modules/terraform-ibm-observability-agents/releases/latest)
 [![Renovate enabled](https://img.shields.io/badge/renovate-enabled-brightgreen.svg)](https://renovatebot.com/)