Drop support for Android 5.x

app/src/main/java/eu/kanade/tachiyomi/ui/manga/MangaController.kt

@@ -298,23 +298,17 @@ class MangaController :
         fab.setOnClickListener {
             val item = presenter.getNextUnreadChapter()
             if (item != null) {
-                // Create animation listener
-                val revealAnimationListener: Animator.AnimatorListener = object : AnimatorListenerAdapter() {
-                    override fun onAnimationStart(animation: Animator?) {
-                        openChapter(item.chapter, true)
-                    }
-                }
-
                 // Get coordinates and start animation
                 actionFab?.getCoordinates()?.let { coordinates ->
-                    if (!binding.revealView.showRevealEffect(
-                            coordinates.x,
-                            coordinates.y,
-                            revealAnimationListener
-                        )
-                    ) {
-                        openChapter(item.chapter)
-                    }
+                    binding.revealView.showRevealEffect(
+                        coordinates.x,
+                        coordinates.y,
+                        object : AnimatorListenerAdapter() {
+                            override fun onAnimationStart(animation: Animator?) {
+                                openChapter(item.chapter, true)
+                            }
+                        }
+                    )
                 }
             } else {
                 view?.context?.toast(R.string.no_next_chapter)

app/src/main/java/eu/kanade/tachiyomi/ui/manga/info/MangaInfoHeaderAdapter.kt

@@ -304,18 +304,6 @@ class MangaInfoHeaderAdapter(
                     initialLoad = false
                 }
             }
-
-            // backgroundTint attribute doesn't work properly on Android 5
-            if (Build.VERSION.SDK_INT == Build.VERSION_CODES.LOLLIPOP) {
-                listOf(binding.backdropOverlay, binding.mangaInfoToggleMoreScrim)
-                    .forEach {
-                        @Suppress("DEPRECATION")
-                        it.background.setColorFilter(
-                            view.context.getResourceColor(android.R.attr.colorBackground),
-                            PorterDuff.Mode.SRC_ATOP
-                        )
-                    }
-            }
         }
 
         private fun showMangaInfo(visible: Boolean) {