Remove dead code from UgiBasedMetastoreClientFactory

Author: findepi

plugin/trino-hive/src/main/java/io/trino/plugin/hive/metastore/thrift/UgiBasedMetastoreClientFactory.java

@@ -18,8 +18,6 @@
 import io.trino.spi.security.ConnectorIdentity;
 import org.apache.thrift.TException;
 
-import java.io.Closeable;
-import java.io.IOException;
 import java.util.Optional;
 
 import static java.util.Objects.requireNonNull;
@@ -65,12 +63,9 @@ private static void setMetastoreUserOrClose(ThriftMetastoreClient client, String
         }
         catch (Throwable t) {
             // close client and suppress any error from close
-            try (Closeable ignored = client) {
+            try (var _ = client) {
                 throw t;
             }
-            catch (IOException e) {
-                // impossible; will be suppressed
-            }
         }
     }
 }