remove redundant decorators

aiozk/test/test_transaction.py

@@ -5,7 +5,6 @@
 pytestmark = pytest.mark.asyncio
 
 
-@pytest.mark.asyncio
 async def test_transaction(zk, path):
     t = Transaction(zk)
     t.create(path)
@@ -15,7 +14,6 @@ async def test_transaction(zk, path):
     assert bool(res)
 
 
-@pytest.mark.asyncio
 async def test_fail_transaction(zk, path):
     t = Transaction(zk)
     t.create(path)
@@ -25,15 +23,13 @@ async def test_fail_transaction(zk, path):
     assert not bool(res)
 
 
-@pytest.mark.asyncio
 async def test_transaction_contextmanager(zk, path):
     async with Transaction(zk) as t:
         t.create(path)
     assert await zk.exists(path)
     await zk.delete(path)
 
 
-@pytest.mark.asyncio
 async def test_transaction_contextmanager_fail(zk, path):
     with pytest.raises(TransactionFailed):
         async with Transaction(zk) as t:
@@ -42,7 +38,6 @@ async def test_transaction_contextmanager_fail(zk, path):
     assert not await zk.exists(path)
 
 
-@pytest.mark.asyncio
 async def test_exception_handling(zk, path):
     with pytest.raises(ValueError):
         async with Transaction(zk) as t: