chore: remove release workflow (#179)

* ci: remove release workflow

* chore: remove release badge from README

Author: hanspagel

.github/workflows/release.yml

@@ -1,7 +1,6 @@
 # Scalar OpenAPI Parser
 
 [![CI](https://github.com/scalar/openapi-parser/actions/workflows/ci.yml/badge.svg)](https://github.com/scalar/openapi-parser/actions/workflows/ci.yml)
-[![Release](https://github.com/scalar/openapi-parser/actions/workflows/release.yml/badge.svg)](https://github.com/scalar/openapi-parser/actions/workflows/release.yml)
 [![Contributors](https://img.shields.io/github/contributors/scalar/openapi-parser)](https://github.com/scalar/openapi-parser/graphs/contributors)
 [![GitHub License](https://img.shields.io/github/license/scalar/openapi-parser)](https://github.com/scalar/openapi-parser/blob/main/LICENSE)
 [![Discord](https://img.shields.io/discord/1135330207960678410?style=flat&color=5865F2)](https://discord.gg/scalar)