prepare for release (Azure#20563)

Author: petrsvihlik

sdk/communication/communication-common/CHANGELOG.md

@@ -1,6 +1,6 @@
 # Release History
 
-## 2.0.0 (Unreleased)
+## 2.0.0 (2022-03-08)
 
 ### Features Added
 
@@ -11,10 +11,6 @@
 - Migrated from using `@azure/core-http` to `@azure/core-rest-pipeline` for the handling of HTTP requests. See [Azure Core v1 vs v2](https://github.com/Azure/azure-sdk-for-js/blob/main/sdk/core/core-rest-pipeline/documentation/core2.md) for more on the difference and benefits of the move.
   - `createCommunicationAccessKeyCredentialPolicy` and `createCommunicationAuthPolicy` newly return `PipelinePolicy` instead of `RequestPolicyFactory`.
 
-### Bugs Fixed
-
-### Other Changes
-
 ## 1.1.0 (2021-07-22)
 
 ### Features Added