DATACMNS-867 - Cleanups.

SliceImpl now already checks Sort instance for not null. Removed unnecessary warnings supression.

src/main/java/org/springframework/data/domain/SliceImpl.java

@@ -53,7 +53,7 @@ public class SliceImpl<T> extends Chunk<T> {
 	 * @param content must not be {@literal null}.
 	 */
 	public SliceImpl(List<T> content) {
-		this(content, null, false);
+		this(content, Pageable.unpaged(), false);
 	}
 
 	/*

src/test/java/org/springframework/data/repository/query/ResultProcessorUnitTests.java

@@ -74,7 +74,6 @@ public class ResultProcessorUnitTests {
 	}
 
 	@Test // DATACMNS-89
-	@SuppressWarnings("unchecked")
 	public void createsListOfProjectionsFormNestedLists() throws Exception {
 
 		ResultProcessor information = getProcessor("findAllProjection");