cleanup MainActivity / last remnants of SavedToots (#2174)

app/src/main/AndroidManifest.xml

@@ -34,9 +34,6 @@
                 android:resource="@xml/share_shortcuts" />
 
         </activity>
-        <activity
-            android:name=".SavedTootActivity"
-            android:configChanges="orientation|screenSize|keyboardHidden" />
         <activity
             android:name=".LoginActivity"
             android:windowSoftInputMode="adjustResize">

app/src/main/java/com/keylesspalace/tusky/MainActivity.kt

@@ -44,7 +44,6 @@ import com.bumptech.glide.load.resource.bitmap.RoundedCorners
 import com.bumptech.glide.request.target.CustomTarget
 import com.bumptech.glide.request.target.FixedSizeDrawable
 import com.bumptech.glide.request.transition.Transition
-import com.google.android.material.floatingactionbutton.FloatingActionButton
 import com.google.android.material.tabs.TabLayout
 import com.google.android.material.tabs.TabLayout.OnTabSelectedListener
 import com.google.android.material.tabs.TabLayoutMediator
@@ -61,7 +60,6 @@ import com.keylesspalace.tusky.components.scheduled.ScheduledTootActivity
 import com.keylesspalace.tusky.components.search.SearchActivity
 import com.keylesspalace.tusky.databinding.ActivityMainBinding
 import com.keylesspalace.tusky.db.AccountEntity
-import com.keylesspalace.tusky.db.AppDatabase
 import com.keylesspalace.tusky.entity.Account
 import com.keylesspalace.tusky.fragment.SFragment
 import com.keylesspalace.tusky.interfaces.AccountSelectionListener
@@ -101,9 +99,6 @@ class MainActivity : BottomSheetActivity(), ActionButtonActivity, HasAndroidInje
     @Inject
     lateinit var conversationRepository: ConversationsRepository
 
-    @Inject
-    lateinit var appDb: AppDatabase
-
     @Inject
     lateinit var draftHelper: DraftHelper
 
@@ -134,10 +129,8 @@ class MainActivity : BottomSheetActivity(), ActionButtonActivity, HasAndroidInje
         super.onCreate(savedInstanceState)
 
         val activeAccount = accountManager.activeAccount
-        if (activeAccount == null) {
-            // will be redirected to LoginActivity by BaseActivity
-            return
-        }
+            ?: return // will be redirected to LoginActivity by BaseActivity
+
         var showNotificationTab = false
         if (intent != null) {
             /** there are two possibilities the accountId can be passed to MainActivity:
@@ -753,7 +746,7 @@ class MainActivity : BottomSheetActivity(), ActionButtonActivity, HasAndroidInje
         header.setActiveProfile(accountManager.activeAccount!!.id)
     }
 
-    override fun getActionButton(): FloatingActionButton? = binding.composeButton
+    override fun getActionButton() = binding.composeButton
 
     override fun androidInjector() = androidInjector