Sort imports

Having consistent import order will reduce chance of merge
conflict between internal and external master

Test: rebuild
Change-Id: I0b1a170967ddcce7f388603fd521f6ed1eeba30b

tests/robotests/src/com/android/settings/accounts/ProviderPreferenceTest.java

@@ -17,6 +17,7 @@
 package com.android.settings.accounts;
 
 import static com.android.settingslib.TwoTargetPreference.ICON_SIZE_MEDIUM;
+
 import static com.google.common.truth.Truth.assertThat;
 
 import android.content.Context;