remove CloseSessionWithLoadTest from muted tests list (#12681)

Author: dcherednik

.github/config/muted_ya.txt

@@ -53,7 +53,6 @@ ydb/core/kqp/ut/scheme KqpOlapScheme.TenThousandColumns
 ydb/core/kqp/ut/scheme KqpScheme.AlterAsyncReplication
 ydb/core/kqp/ut/scheme [*/*] chunk chunk
 ydb/core/kqp/ut/scheme [*/*]+chunk+chunk
-ydb/core/kqp/ut/service KqpService.CloseSessionsWithLoad
 ydb/core/kqp/ut/service [*/*] chunk chunk
 ydb/core/kqp/ut/service [*/*]+chunk+chunk
 ydb/core/mind/hive/ut THiveTest.TestHiveBalancerNodeRestarts