chore: remove all gitter links and replace with dicussions (open-tele…

…metry#1866)

* chore: remove all gitter links and replace with dicussions

* chore: remove reference to gitter in contributing.md

api/README.md

@@ -1,6 +1,5 @@
 # OpenTelemetry API for JavaScript
 
-[![Gitter chat][gitter-image]][gitter-url]
 [![NPM Published Version][npm-img]][npm-url]
 [![dependencies][dependencies-image]][dependencies-url]
 [![devDependencies][devDependencies-image]][devDependencies-url]
@@ -147,14 +146,13 @@ async function doSomething() {
 
 - For more information on OpenTelemetry, visit: <https://opentelemetry.io/>
 - For more about OpenTelemetry JavaScript: <https://github.com/open-telemetry/opentelemetry-js>
-- For help or feedback on this project, join us on [gitter][gitter-url]
+- For help or feedback on this project, join us in [GitHub Discussions][discussions-url]
 
 ## License
 
 Apache 2.0 - See [LICENSE][license-url] for more information.
 
-[gitter-image]: https://badges.gitter.im/open-telemetry/opentelemetry-js.svg
-[gitter-url]: https://gitter.im/open-telemetry/opentelemetry-node?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge
+[discussions-url]: https://github.com/open-telemetry/opentelemetry-js/discussions
 [license-url]: https://github.com/open-telemetry/opentelemetry-js/blob/main/LICENSE
 [license-image]: https://img.shields.io/badge/license-Apache_2.0-green.svg?style=flat
 [dependencies-image]: https://david-dm.org/open-telemetry/opentelemetry-js/status.svg?path=packages/opentelemetry-api

api/packages/opentelemetry-context-base/README.md

@@ -1,6 +1,5 @@
 # OpenTelemetry Base Context Manager
 
-[![Gitter chat][gitter-image]][gitter-url]
 [![NPM Published Version][npm-img]][npm-url]
 [![dependencies][dependencies-image]][dependencies-url]
 [![devDependencies][devDependencies-image]][devDependencies-url]
@@ -22,14 +21,13 @@ This package only include the interface and a Noop implementation, for more info
 
 - For more information on OpenTelemetry, visit: <https://opentelemetry.io/>
 - For more about OpenTelemetry JavaScript: <https://github.com/open-telemetry/opentelemetry-js>
-- For help or feedback on this project, join us on [gitter][gitter-url]
+- For help or feedback on this project, join us in [GitHub Discussions][discussions-url]
 
 ## License
 
 Apache 2.0 - See [LICENSE][license-url] for more information.
 
-[gitter-image]: https://badges.gitter.im/open-telemetry/opentelemetry-js.svg
-[gitter-url]: https://gitter.im/open-telemetry/opentelemetry-node?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge
+[discussions-url]: https://github.com/open-telemetry/opentelemetry-js/discussions
 [license-url]: https://github.com/open-telemetry/opentelemetry-js/blob/main/LICENSE
 [license-image]: https://img.shields.io/badge/license-Apache_2.0-green.svg?style=flat
 [dependencies-image]: https://david-dm.org/open-telemetry/opentelemetry-js/status.svg?path=packages/opentelemetry-context-base