Revert "feat: small speed up to processing bluez passive data"

This reverts commit b858d95.

src/dbus_fast/message_bus.pxd

@@ -16,8 +16,6 @@ cdef object assert_bus_name_valid
 
 cdef _expects_reply(Message msg)
 
-cdef _swallow_unexpected_reply(Message msg)
-
 cdef class SendReply:
 
     cdef object _bus

src/dbus_fast/message_bus.py

@@ -33,14 +33,9 @@
 
 
 def _expects_reply(msg: _Message) -> bool:
-    """Whether a message expects a reply."""
     return not (msg.flags.value & NO_REPLY_EXPECTED_VALUE)
 
 
-def _swallow_unexpected_reply(msg: _Message) -> None:
-    """Swallow a reply if it's not expected."""
-
-
 class SendReply:
     """A context manager to send a reply to a message."""
 
@@ -55,7 +50,8 @@ def __enter__(self):
         return self
 
     def __call__(self, reply: Message) -> None:
-        self._bus.send(reply)
+        if _expects_reply(self._msg):
+            self._bus.send(reply)
 
     def _exit(
         self,
@@ -859,11 +855,9 @@ def _process_message(self, msg: _Message) -> None:
         if msg.message_type is MESSAGE_TYPE_CALL:
             if not handled:
                 handler = self._find_message_handler(msg)
-                if not _expects_reply(msg):
-                    handler(msg, _swallow_unexpected_reply)
-                    return
 
                 send_reply = SendReply(self, msg)
+
                 with send_reply:
                     if handler:
                         handler(msg, send_reply)