[firebase-release] Removed change log and reset repo after 15.6.0 release

Author: google-oss-bot

CHANGELOG.md

@@ -1,26 +0,0 @@
-- Added support for enabling Firebase Authentication providers via `firebase deploy`. You can configure providers in `firebase.json` like so:
-
-```json
-{
-  "auth": {
-    "providers": {
-      "anonymous": true,
-      "emailPassword": true,
-      "googleSignIn": {
-        "oAuthBrandDisplayName": "My App",
-        "supportEmail": "support@myapp.com"
-      }
-    }
-  }
-}
-```
-
-- Added initial zip deploy support in functions deploy for HTTP functions (#9707)
-- Fixes an issue where Python was missing from the firebase-tools Docker image (#9855).
-- Fixes billing information check to use user's project quota (#9879).
-- Updated the Firebase Data Connect local toolkit to v3.1.2, which contains the following changes: (#9882)
-  - Improved insecure operation warning messages and reduced the severity of existing insecure operation warnings to LOG_ONLY.
-  - Updated the Golang dependency version from 1.24.4 to 1.24.12.
-- Fixes issue where auth emulator multi-tenant mode exports/imports only users tied to the default tenant (#5623)
-- Updated Pub/Sub emulator to version 0.8.27.
-- Updated the Data Connect emulator to v3.1.3, which enables the native SQL feature.