Do not migrate db to new config path (#14123)

I just saw this, and I would be very surprised by that behaviour as a
user. Changing the db path would randomly move the database, and
changing it back (or to anything, really) would not. These kinds of
advanced settings are generally expected to do one thing: Change the
path frigate opens the database from. The end.

frigate/app.py

@@ -35,7 +35,6 @@ from frigate.const import (
     CACHE_DIR,
     CLIPS_DIR,
     CONFIG_DIR,
-    DEFAULT_DB_PATH,
     EXPORT_DIR,
     MODEL_CACHE_DIR,
     RECORD_DIR,
@@ -151,13 +150,6 @@ class FrigateApp:
             except PermissionError:
                 logger.error("Unable to write to /config to save DB state")
 
-        # Migrate DB location
-        old_db_path = DEFAULT_DB_PATH
-        if not os.path.isfile(self.config.database.path) and os.path.isfile(
-            old_db_path
-        ):
-            os.rename(old_db_path, self.config.database.path)
-
         # Migrate DB schema
         migrate_db = SqliteExtDatabase(self.config.database.path)