Remove modifiers 'public' and 'abstract' from interface methods

These modifiers are unnecessary (default for interface methods).

Change-Id: I5ad21dded21059922fb00449ba44e98037311ac4

gerrit-server/src/main/java/com/google/gerrit/rules/PredicateProvider.java

@@ -30,5 +30,5 @@ import com.googlecode.prolog_cafe.lang.Predicate;
 @ExtensionPoint
 public interface PredicateProvider {
   /** Return set of packages that contain Prolog predicates */
-  public ImmutableSet<String> getPackages();
+  ImmutableSet<String> getPackages();
 }