Remove workarounds for versions earlier than Python 3.10

See-Also: #275

aiocoap/pipe.py

@@ -5,7 +5,6 @@
 import asyncio
 from collections import namedtuple
 import functools
-import sys
 
 from . import error
 from .numbers import INTERNAL_SERVER_ERROR
@@ -221,19 +220,6 @@ async def wrapped():
         wrapped(),
         name=name,
     )
-    if sys.version_info < (3, 8):
-        # These Python versions used to complain about cancelled tasks, where
-        # really a cancelled task is perfectly natural (especially here where
-        # it's just not needed any more because nobody is listening to what it
-        # produces). As catching CancellationError doesn't help silencing them,
-        # this workaround ensures the cancellations don't raise.
-        def silence_cancellation(task):
-            try:
-                task.result()
-            except asyncio.CancelledError:
-                pass
-
-        task.add_done_callback(silence_cancellation)
     pipe.on_interest_end(task.cancel)
 
 

tests/test_doctest.py

@@ -49,13 +49,6 @@ def _load_tests():
                 and not aiocoap.defaults.is_pyodide
             ):
                 continue
-            if "udp6" in p and (
-                # due to https://foss.heptapod.net/pypy/pypy/issues/3249
-                "PyPy" in sys.version
-                # if_indextoname etc introduced only in 3.8
-                or (sys.platform == "win32" and sys.version_info < (3, 8))
-            ):
-                continue
             for t in doctest.DocTestSuite(p):
                 i += 1
 

tests/test_tls.py

@@ -112,15 +112,6 @@ async def test_tls(self):
             "SNI name was not used by the server",
         )
 
-    if sys.version_info < (3, 7):
-        test_tls = unittest.expectedFailure(
-            test_tls
-        )  # SNI support was only added in Python 3.7
-    if "PyPy" in sys.version:
-        # For PyPy exclusion, see https://foss.heptapod.net/pypy/pypy/-/issues/3359
-        # Completely skipping a test that causes segfaults
-        test_tls = None
-
 
 if __name__ == "__main__":
     # due to the imports, you'll need to run this as `python3 -m tests.test_server`