remove duplicate _sock_exact_recv() definition

Author: vladak

adafruit_minimqtt/adafruit_minimqtt.py

@@ -313,35 +313,6 @@ def __enter__(self):
     def __exit__(self, exception_type, exception_value, traceback):
         self.deinit()
 
-    def _sock_exact_recv(self, bufsize):
-        """Reads _exact_ number of bytes from the connected socket. Will only return
-        string with the exact number of bytes requested.
-
-        The semantics of native socket receive is that it returns no more than the
-        specified number of bytes (i.e. max size). However, it makes no guarantees in
-        terms of the minimum size of the buffer, which could be 1 byte. This is a
-        wrapper for socket recv() to ensure that no less than the expected number of
-        bytes is returned or trigger a timeout exception.
-
-        :param int bufsize: number of bytes to receive
-        """
-        stamp = time.monotonic()
-        rc = self._sock.recv(bufsize)
-        to_read = bufsize - len(rc)
-        assert to_read >= 0
-        read_timeout = self.keep_alive
-        while to_read > 0:
-            recv = self._sock.recv(to_read)
-            to_read -= len(recv)
-            rc += recv
-            if time.monotonic() - stamp > read_timeout:
-                raise MMQTTException(
-                    "Unable to receive {} bytes within {} seconds.".format(
-                        to_read, read_timeout
-                    )
-                )
-        return rc
-
     def deinit(self):
         """De-initializes the MQTT client and disconnects from the mqtt broker."""
         self.disconnect()