legacy: remove fragment-based screens and sheets

Drops every Fragment, DialogFragment and BottomSheet in view/ui plus
the flavoured SplashFragment variants. All call sites now route
through compose/ui equivalents and ComposeActivity.

app/src/vanilla/java/com/aurora/store/view/ui/splash/SplashFragment.kt

@@ -1,25 +0,0 @@
-/*
- * Aurora Store
- *  Copyright (C) 2021, Rahul Kumar Patel <whyorean@gmail.com>
- *
- *  Aurora Store is free software: you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation, either version 2 of the License, or
- *  (at your option) any later version.
- *
- *  Aurora Store is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with Aurora Store.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
-package com.aurora.store.view.ui.splash
-
-import dagger.hilt.android.AndroidEntryPoint
-
-@AndroidEntryPoint
-class SplashFragment : BaseFlavouredSplashFragment()