Prepare for removal of ListenableFuture.

Suppress warnings for using deprecated-for-removal code.

Closes #1530

spring-data-cassandra/src/main/java/org/springframework/data/cassandra/core/cql/legacy/AsyncCqlOperations.java

@@ -51,6 +51,7 @@
  *             {@link org.springframework.data.cassandra.core.cql.AsyncCqlOperations}.
  */
 @Deprecated(since = "4.0", forRemoval = true)
+@SuppressWarnings("removal")
 public interface AsyncCqlOperations {
 
 	// -------------------------------------------------------------------------

spring-data-cassandra/src/main/java/org/springframework/data/cassandra/core/cql/legacy/AsyncCqlTemplate.java

@@ -89,6 +89,7 @@
  *             {@link org.springframework.data.cassandra.core.cql.AsyncCqlTemplate}.
  */
 @Deprecated(since = "4.0", forRemoval = true)
+@SuppressWarnings("removal")
 public class AsyncCqlTemplate extends CassandraAccessor implements AsyncCqlOperations {
 
 	/**

spring-data-cassandra/src/main/java/org/springframework/data/cassandra/core/cql/legacy/AsyncPreparedStatementCreator.java

@@ -48,6 +48,7 @@
  */
 @Deprecated(since = "4.0", forRemoval = true)
 @FunctionalInterface
+@SuppressWarnings("removal")
 public interface AsyncPreparedStatementCreator {
 
 	/**

spring-data-cassandra/src/main/java/org/springframework/data/cassandra/core/cql/legacy/AsyncResultSetExtractor.java

@@ -46,6 +46,7 @@
  */
 @Deprecated(since = "4.0", forRemoval = true)
 @FunctionalInterface
+@SuppressWarnings("removal")
 public interface AsyncResultSetExtractor<T> {
 
 	/**

spring-data-cassandra/src/main/java/org/springframework/data/cassandra/core/cql/legacy/AsyncResultStream.java

@@ -36,6 +36,7 @@
  * @since 4.0
  */
 @Deprecated(since = "4.0", forRemoval = true)
+@SuppressWarnings("removal")
 class AsyncResultStream<T> {
 
 	private final AsyncResultSet resultSet;

spring-data-cassandra/src/main/java/org/springframework/data/cassandra/core/cql/legacy/AsyncRowMapperResultSetExtractor.java

@@ -45,6 +45,7 @@
  * @deprecated since 4.0, use the {@link java.util.concurrent.CompletableFuture}-based variant.
  */
 @Deprecated(since = "4.0", forRemoval = true)
+@SuppressWarnings("removal")
 public class AsyncRowMapperResultSetExtractor<T> implements AsyncResultSetExtractor<List<T>> {
 
 	private final RowMapper<T> rowMapper;

spring-data-cassandra/src/main/java/org/springframework/data/cassandra/core/cql/legacy/AsyncSessionCallback.java

@@ -39,6 +39,7 @@
  */
 @Deprecated(since = "4.0", forRemoval = true)
 @FunctionalInterface
+@SuppressWarnings("removal")
 public interface AsyncSessionCallback<T> {
 
 	/**

spring-data-cassandra/src/main/java/org/springframework/data/cassandra/core/cql/legacy/ExceptionTranslatingListenableFutureAdapter.java

@@ -37,6 +37,7 @@
  * @since 4.0
  */
 @Deprecated(since = "4.0", forRemoval = true)
+@SuppressWarnings("removal")
 class ExceptionTranslatingListenableFutureAdapter<T> implements ListenableFuture<T> {
 
 	private final ListenableFuture<T> adaptee;

spring-data-cassandra/src/main/java/org/springframework/data/cassandra/core/legacy/AsyncCassandraOperations.java

@@ -53,6 +53,7 @@
  *             {@link org.springframework.data.cassandra.core.AsyncCassandraTemplate}.
  */
 @Deprecated(since = "4.0", forRemoval = true)
+@SuppressWarnings("removal")
 public interface AsyncCassandraOperations {
 
 	/**

spring-data-cassandra/src/main/java/org/springframework/data/cassandra/core/legacy/AsyncCassandraTemplate.java

@@ -131,6 +131,7 @@
  *             {@link org.springframework.data.cassandra.core.AsyncCassandraTemplate}.
  */
 @Deprecated(since = "4.0", forRemoval = true)
+@SuppressWarnings("removal")
 public class AsyncCassandraTemplate
 		implements AsyncCassandraOperations, ApplicationEventPublisherAware, ApplicationContextAware {
 

spring-data-cassandra/src/main/java/org/springframework/data/cassandra/core/legacy/EntityOperations.java

@@ -49,6 +49,7 @@
  * @since 4.0
  */
 @Deprecated(since = "4.0", forRemoval = true)
+@SuppressWarnings("removal")
 class EntityOperations {
 
 	private final MappingContext<? extends CassandraPersistentEntity<?>, CassandraPersistentProperty> mappingContext;

spring-data-cassandra/src/test/java/org/springframework/data/cassandra/core/cql/legacy/AsyncCqlTemplateIntegrationTests.java

@@ -35,6 +35,7 @@
  *
  * @author Mark Paluch
  */
+@SuppressWarnings("removal")
 class AsyncCqlTemplateIntegrationTests extends AbstractKeyspaceCreatingIntegrationTests {
 
 	private static final AtomicBoolean initialized = new AtomicBoolean();

spring-data-cassandra/src/test/java/org/springframework/data/cassandra/core/cql/legacy/AsyncCqlTemplateUnitTests.java

@@ -64,6 +64,7 @@
  */
 @ExtendWith(MockitoExtension.class)
 @MockitoSettings(strictness = Strictness.LENIENT)
+@SuppressWarnings("removal")
 class AsyncCqlTemplateUnitTests {
 
 	@Mock CqlSession session;

spring-data-cassandra/src/test/java/org/springframework/data/cassandra/core/cql/legacy/AsyncResultStreamUnitTests.java

@@ -36,6 +36,7 @@
  *
  * @author Mark Paluch
  */
+@SuppressWarnings("removal")
 class AsyncResultStreamUnitTests {
 
 	private AsyncResultSet first = mock(AsyncResultSet.class);

spring-data-cassandra/src/test/java/org/springframework/data/cassandra/core/legacy/AsyncCassandraTemplateIntegrationTests.java

@@ -50,6 +50,7 @@
  *
  * @author Mark Paluch
  */
+@SuppressWarnings("removal")
 class AsyncCassandraTemplateIntegrationTests extends AbstractKeyspaceCreatingIntegrationTests {
 
 	private AsyncCassandraTemplate template;

spring-data-cassandra/src/test/java/org/springframework/data/cassandra/core/legacy/AsyncCassandraTemplateUnitTests.java

@@ -70,6 +70,7 @@
  */
 @ExtendWith(MockitoExtension.class)
 @MockitoSettings(strictness = Strictness.LENIENT)
+@SuppressWarnings("removal")
 class AsyncCassandraTemplateUnitTests {
 
 	@Mock CqlSession session;