tests: remove pytestmark = pytest.mark.asyncio

Remove a couple of occurences that were almost randomly sprinkled in the
code. This would matter only if we used pytest-asyncio's asyncio_mode =
"strict", and we don't intend to do so anytime soon. (If we did, more
changes would be needed anyway.)

Author: paravoid

tests/test_jaraco.py

@@ -12,8 +12,6 @@
 if TYPE_CHECKING:
     from ircstream.ircserver import IRCServer
 
-pytestmark = pytest.mark.asyncio
-
 BOTNAME = "testsuite-bot"
 
 

tests/test_rawsocket.py

@@ -16,8 +16,6 @@
 
 from ircstream.ircserver import IRCClient, IRCServer
 
-pytestmark = pytest.mark.asyncio
-
 
 class BareClient:
     """Bare client around socket operations to support a line-based protocol."""

tests/test_rc2udp.py

@@ -10,8 +10,6 @@
 
 from ircstream.rc2udp import RC2UDPServer
 
-pytestmark = pytest.mark.asyncio
-
 
 class MockIRCServer:
     """Mocks the IRCServer object.