Update CHANGELOG.md (Azure#42200)

Author: ChenxiJiang333

sdk/mongocluster/azure-mgmt-mongocluster/CHANGELOG.md

@@ -1,33 +1,5 @@
 # Release History
 
-## 1.1.0b1 (2025-06-03)
-
-### Features Added
-
-  - Client `MongoClusterMgmtClient` added operation group `users`
-  - Model `MongoClusterProperties` added property `data_api`
-  - Model `MongoClusterProperties` added property `auth_config`
-  - Model `MongoClusterUpdateProperties` added property `data_api`
-  - Model `MongoClusterUpdateProperties` added property `auth_config`
-  - Model `StorageProperties` added property `type`
-  - Model `StorageProperties` added property `iops`
-  - Model `StorageProperties` added property `throughput`
-  - Added model `AuthConfigProperties`
-  - Added enum `AuthenticationMode`
-  - Added enum `DataApiMode`
-  - Added model `DataApiProperties`
-  - Added model `DatabaseRole`
-  - Added model `EntraIdentityProvider`
-  - Added model `EntraIdentityProviderProperties`
-  - Added enum `EntraPrincipalType`
-  - Added model `IdentityProvider`
-  - Added enum `IdentityProviderType`
-  - Added enum `StorageType`
-  - Added model `User`
-  - Added model `UserProperties`
-  - Added enum `UserRole`
-  - Added operation group `UsersOperations`
-
 ## 1.0.0 (2024-09-26)
 
 ### Features Added