Merge "Remove unused modifier_shortcut_manager_multiuser flag" into main

package: "com.android.server.flags"

container: "system"

flag {

    namespace: "input"

    name: "modifier_shortcut_manager_multiuser"

    description: "Update Modifier Shortcut Manager to work correctly with multiple users, including HSUM"

    bug: "351963350"

    metadata {

        purpose: PURPOSE_BUGFIX

    }

}

flag {

    namespace: "backstage_power"

    name: "rate_limit_battery_changed_broadcast"