Set release date (Azure#52756)

* Set release date

* Remove empty sections

Author: rhurey

sdk/ai/Azure.AI.VoiceLive/CHANGELOG.md

@@ -1,6 +1,6 @@
 # Release History
 
-## 1.0.0-beta.2 (Unreleased)
+## 1.0.0-beta.2 (2025-09-22)
 
 ### Features Added
 Added overloads for MessageItem creation to accept a single content part.
@@ -13,10 +13,6 @@ API properties that were duration based are now TimeSpans
 Methods to configure session collapsed to ConfigureSession
 Renamed ToolChoiceFunctionObjectFunction to ToolChoiceFunctionObject
 
-### Bugs Fixed
-
-### Other Changes
-
 ## 1.0.0-beta.1 (2025-09-16)
 
 ### Features Added