Removed @experimental annotation

Author: alex268

query/src/main/java/tech/ydb/query/QueryClient.java

@@ -6,8 +6,6 @@
 
 import javax.annotation.WillNotClose;
 
-import io.grpc.ExperimentalApi;
-
 import tech.ydb.core.Result;
 import tech.ydb.core.grpc.GrpcTransport;
 import tech.ydb.query.impl.QueryClientImpl;
@@ -18,7 +16,6 @@
  *
  * @author Aleksandr Gorshenin
  */
-@ExperimentalApi("QueryService is experimental and API may change without notice")
 public interface QueryClient extends AutoCloseable {
     static Builder newClient(@WillNotClose GrpcTransport transport) {
         return QueryClientImpl.newClient(transport);

query/src/main/java/tech/ydb/query/QuerySession.java

@@ -2,8 +2,6 @@
 
 import java.util.concurrent.CompletableFuture;
 
-import io.grpc.ExperimentalApi;
-
 import tech.ydb.common.transaction.TxMode;
 import tech.ydb.core.Result;
 import tech.ydb.query.settings.BeginTransactionSettings;
@@ -22,7 +20,6 @@
  *
  * @author Aleksandr Gorshenin
  */
-@ExperimentalApi("QueryService is experimental and API may change without notice")
 public interface QuerySession extends AutoCloseable {
 
     /**

query/src/main/java/tech/ydb/query/QueryStream.java

@@ -2,8 +2,6 @@
 
 import java.util.concurrent.CompletableFuture;
 
-import io.grpc.ExperimentalApi;
-
 import tech.ydb.core.Issue;
 import tech.ydb.core.Result;
 import tech.ydb.query.result.QueryInfo;
@@ -13,7 +11,6 @@
  *
  * @author Aleksandr Gorshenin
  */
-@ExperimentalApi("QueryService is experimental and API may change without notice")
 public interface QueryStream {
     interface PartsHandler {
         default void onIssues(Issue[] issues) { }

query/src/main/java/tech/ydb/query/QueryTransaction.java

@@ -2,8 +2,6 @@
 
 import java.util.concurrent.CompletableFuture;
 
-import io.grpc.ExperimentalApi;
-
 import tech.ydb.common.transaction.YdbTransaction;
 import tech.ydb.core.Result;
 import tech.ydb.core.Status;
@@ -22,7 +20,6 @@
  *
  * @author Aleksandr Gorshenin
  */
-@ExperimentalApi("QueryService is experimental and API may change without notice")
 public interface QueryTransaction extends YdbTransaction {
 
     /**