Remove system notices

...c/main/java/org/futo/circles/feature/home/HomeFragment.kt

...ava/org/futo/circles/feature/settings/SettingsFragment.kt

...va/org/futo/circles/feature/settings/SettingsNavigator.kt

app/src/main/res/layout/fragment_settings.xml

app/src/main/res/navigation/settings_nav_graph.xml

core/src/main/java/org/futo/circles/core/Constants.kt

...g/futo/circles/core/extensions/MatrixSessionExtensions.kt

.../java/org/futo/circles/core/model/SystemNoticeListItem.kt

...circles/core/notices/SystemNoticesCountSharedViewModel.kt

.../futo/circles/core/notices/SystemNoticesDialogFragment.kt

...to/circles/core/notices/SystemNoticesTimelineViewModel.kt

...circles/core/notices/list/SystemNoticesTimelineAdapter.kt

...futo/circles/core/notices/list/SystemNoticesViewHolder.kt

...g/futo/circles/core/select_users/SelectUsersDataSource.kt

core/src/main/java/org/futo/circles/core/utils/RoomUtils.kt

core/src/main/res/layout/dialog_fragment_system_notices.xml

core/src/main/res/layout/list_item_system_notices.xml

core/src/main/res/values/strings.xml