Revert^2 "Nullability Annotations replacement"

This reverts commit 19d1d3d15d.

Reason for revert: revert it because this is not the root cause.

bug: 316867690
Change-Id: I0f168dbb64044aa720202af7b1040afd4f028c9c

src/com/android/settings/print/SettingsPrintServicesLoader.java

@@ -16,12 +16,12 @@
 
 package com.android.settings.print;
 
-import android.annotation.NonNull;
 import android.content.Context;
 import android.print.PrintManager;
 import android.print.PrintServicesLoader;
 import android.printservice.PrintServiceInfo;
 
+import androidx.annotation.NonNull;
 import androidx.loader.content.Loader;
 
 import com.android.internal.util.Preconditions;