[firebase-release] Removed change log and reset repo after 14.12.1 release

Author: google-oss-bot

CHANGELOG.md

@@ -1,9 +0,0 @@
-- Updated runtime config deprecation warning to no longer shows for v1 functions that only use default Firebase config. (#8963)
-- Fixed an issue where 'dataconnect:migrate' would use an invalid temporary password when connecting to enterprise plus CloudSQL instances.
-- Updated Data Connect emulator to v2.11.1, which:
-  - [added] Add an app watch that collects embedded GQL into the connector folder.
-  - [fixed] Handle foreign key constraint error as FailedPrecondition.
-- [Added] Support for creating Firestore Enterprise databases using `firestore:databases:create --edition enterprise`. (#8952)
-- [Added] Support for Firestore Enterprise database index configurations. (#8939)
-- [fixed] MCP: The `get_sdk_config` tool now properly returns decoded file content for Android and iOS.
-- [added] MCP: prompts are now supported with a `deploy` prompt as the first available.