Migrated SystemUI & SettingsLib to androidx

Test: make SystemUI SettingsLib
Bug:76692459
Change-Id: I248fdf4042a0a97bc6349091da21c936c2d37c95
diff --git a/packages/SystemUI/src/com/android/keyguard/KeyguardSliceView.java b/packages/SystemUI/src/com/android/keyguard/KeyguardSliceView.java
index 5a6ff41..e936c3b 100644
--- a/packages/SystemUI/src/com/android/keyguard/KeyguardSliceView.java
+++ b/packages/SystemUI/src/com/android/keyguard/KeyguardSliceView.java
@@ -21,8 +21,8 @@
 import android.animation.PropertyValuesHolder;
 import android.annotation.ColorInt;
 import android.app.PendingIntent;
-import android.arch.lifecycle.LiveData;
-import android.arch.lifecycle.Observer;
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.Observer;
 import android.content.Context;
 import android.graphics.Color;
 import android.graphics.drawable.Drawable;