Convert entire project to strict lexicographical import sort ordering

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=127234970

java/google/registry/tldconfig/idn/IdnLabelValidator.java

@@ -20,7 +20,6 @@ import static google.registry.tldconfig.idn.IdnTableEnum.JA;
 import com.google.common.base.Optional;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
-
 import google.registry.util.Idn;
 import google.registry.util.NonFinalForTesting;
 

java/google/registry/tldconfig/idn/IdnTable.java

@@ -23,7 +23,6 @@ import com.google.common.collect.Range;
 import com.google.common.collect.RangeSet;
 import com.google.re2j.Matcher;
 import com.google.re2j.Pattern;
-
 import java.net.URI;
 
 /** An IDN table for a particular TLD. */

java/google/registry/tldconfig/idn/IdnTableEnum.java

@@ -19,7 +19,6 @@ import static java.nio.charset.StandardCharsets.UTF_8;
 
 import com.google.common.base.Ascii;
 import com.google.common.io.Resources;
-
 import java.io.IOException;
 import java.net.URL;
 

java/google/registry/tldconfig/idn/JapaneseLanguageValidator.java

@@ -22,7 +22,6 @@ import static java.lang.Character.UnicodeBlock.KATAKANA;
 import com.google.common.collect.ImmutableRangeSet;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Range;
-
 import java.lang.Character.UnicodeBlock;
 
 /**