Remove confirm exit option

Redundant with predictive back, but also just sort of pointless since it doesn't help
with any sort of app state retention.

app/src/main/java/eu/kanade/tachiyomi/ui/main/MainActivity.kt

@@ -9,9 +9,7 @@ import android.graphics.Color
 import android.os.Build
 import android.os.Bundle
 import android.view.View
-import android.widget.Toast
 import androidx.activity.ComponentActivity
-import androidx.activity.compose.BackHandler
 import androidx.compose.foundation.isSystemInDarkTheme
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.WindowInsets
@@ -32,7 +30,6 @@ import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
-import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.luminance
@@ -80,10 +77,8 @@ import eu.kanade.tachiyomi.ui.more.NewUpdateScreen
 import eu.kanade.tachiyomi.util.system.dpToPx
 import eu.kanade.tachiyomi.util.system.isNavigationBarNeedsScrim
 import eu.kanade.tachiyomi.util.system.openInBrowser
-import eu.kanade.tachiyomi.util.system.toast
 import eu.kanade.tachiyomi.util.view.setComposeContent
 import kotlinx.coroutines.channels.awaitClose
-import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.callbackFlow
 import kotlinx.coroutines.flow.collectLatest
 import kotlinx.coroutines.flow.drop
@@ -100,7 +95,6 @@ import tachiyomi.presentation.core.components.material.Scaffold
 import uy.kohesive.injekt.Injekt
 import uy.kohesive.injekt.api.get
 import uy.kohesive.injekt.injectLazy
-import kotlin.time.Duration.Companion.seconds
 import androidx.compose.ui.graphics.Color.Companion as ComposeColor
 
 class MainActivity : BaseActivity() {
@@ -192,10 +186,6 @@ class MainActivity : BaseActivity() {
                 screen = HomeScreen,
                 disposeBehavior = NavigatorDisposeBehavior(disposeNestedNavigators = false, disposeSteps = true),
             ) { navigator ->
-                if (navigator.size == 1) {
-                    ConfirmExit()
-                }
-
                 LaunchedEffect(navigator) {
                     this@MainActivity.navigator = navigator
 
@@ -288,22 +278,6 @@ class MainActivity : BaseActivity() {
         }
     }
 
-    @Composable
-    private fun ConfirmExit() {
-        val scope = rememberCoroutineScope()
-        val confirmExit by preferences.confirmExit().collectAsState()
-        var waitingConfirmation by remember { mutableStateOf(false) }
-        BackHandler(enabled = !waitingConfirmation && confirmExit) {
-            scope.launch {
-                waitingConfirmation = true
-                val toast = toast(R.string.confirm_exit, Toast.LENGTH_LONG)
-                delay(2.seconds)
-                toast.cancel()
-                waitingConfirmation = false
-            }
-        }
-    }
-
     @Composable
     fun HandleOnNewIntent(context: Context, navigator: Navigator) {
         LaunchedEffect(Unit) {