Simplify unnecessary raise_signal util function

python/pyarrow/tests/test_csv.py

@@ -1444,14 +1444,11 @@ def test_cancellation(self):
         if (threading.current_thread().ident !=
                 threading.main_thread().ident):
             pytest.skip("test only works from main Python thread")
-        # Skips test if not available
-        raise_signal = util.get_raise_signal()
-        signum = signal.SIGINT
 
         def signal_from_thread():
             # Give our workload a chance to start up
             time.sleep(0.2)
-            raise_signal(signum)
+            signal.raise_signal(signal.SIGINT)
 
         # We start with a small CSV reading workload and increase its size
         # until it's large enough to get an interruption during it, even in

python/pyarrow/tests/test_flight.py

@@ -2101,12 +2101,10 @@ def do_exchange(self, context, descriptor, reader, writer):
 def test_interrupt():
     if threading.current_thread().ident != threading.main_thread().ident:
         pytest.skip("test only works from main Python thread")
-    # Skips test if not available
-    raise_signal = util.get_raise_signal()
 
     def signal_from_thread():
         time.sleep(0.5)
-        raise_signal(signal.SIGINT)
+        signal.raise_signal(signal.SIGINT)
 
     exc_types = (KeyboardInterrupt, pa.ArrowCancelled)
 

python/pyarrow/tests/util.py

@@ -309,10 +309,6 @@ def open_append_stream(self, path, metadata):
         return self._fs.open_append_stream(path, metadata=metadata)
 
 
-def get_raise_signal():
-    return signal.raise_signal
-
-
 @contextlib.contextmanager
 def signal_wakeup_fd(*, warn_on_full_buffer=False):
     # Use a socket pair, rather a self-pipe, so that select() can be used