diff --git a/app/src/main/java/io/twoyi/utils/RomManager.java b/app/src/main/java/io/twoyi/utils/RomManager.java
index 4fb96d7..ca229e4 100644
--- a/app/src/main/java/io/twoyi/utils/RomManager.java
+++ b/app/src/main/java/io/twoyi/utils/RomManager.java
@@ -36,7 +36,6 @@
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
-import java.nio.file.StandardCopyOption;
 import java.util.Locale;
 import java.util.Properties;
 import java.util.TimeZone;
diff --git a/app/src/main/res/layout/ac_render.xml b/app/src/main/res/layout/ac_render.xml
index 5ee7fa1..04ef416 100644
--- a/app/src/main/res/layout/ac_render.xml
+++ b/app/src/main/res/layout/ac_render.xml
@@ -6,7 +6,6 @@
   -->
 
 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:id="@+id/root"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
diff --git a/app/src/main/res/menu/search_menu.xml b/app/src/main/res/menu/search_menu.xml
index 74736cb..7f0f5be 100644
--- a/app/src/main/res/menu/search_menu.xml
+++ b/app/src/main/res/menu/search_menu.xml
@@ -6,8 +6,7 @@
   -->
 
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools">
+    xmlns:app="http://schemas.android.com/apk/res-auto">
     <item
         android:id="@+id/menu_search"
         android:icon="@drawable/ic_search"