refactor: OpenRewrite Recipe best practices

Use this link to re-run the recipe: https://app.moderne.io/recipes/org.openrewrite.recipes.rewrite.OpenRewriteRecipeBestPractices?organizationId=T3BlblJld3JpdGU%3D

Co-authored-by: Moderne <[email protected]>

Author: 2 people

src/main/java/org/openrewrite/java/migrate/lombok/UseLombokGetter.java

@@ -29,8 +29,6 @@
 import java.util.Collections;
 import java.util.Set;
 
-import static java.util.Comparator.comparing;
-
 @Value
 @EqualsAndHashCode(callSuper = false)
 public class UseLombokGetter extends Recipe {

src/test/java/org/openrewrite/java/migrate/util/MigrateCollectionsSingletonListTest.java

@@ -21,7 +21,6 @@
 import org.openrewrite.java.JavaParser;
 import org.openrewrite.test.RecipeSpec;
 import org.openrewrite.test.RewriteTest;
-import org.openrewrite.test.TypeValidation;
 
 import static org.openrewrite.java.Assertions.java;
 import static org.openrewrite.java.Assertions.javaVersion;