try different format

Author: vladak

adafruit_minimqtt/adafruit_minimqtt.py

@@ -966,10 +966,7 @@ def _sock_exact_recv(self, bufsize):
             recv_len = self._sock.recv_into(rc, bufsize)
             to_read = bufsize - recv_len
             if to_read < 0:
-                raise MMQTTException(
-                    f"negative number of bytes to read: "
-                    f"{to_read} = {bufsize} - {recv_len}"
-                )
+                raise MMQTTException(f"negative number of bytes to read: {to_read}")
             read_timeout = self.keep_alive
             mv = mv[recv_len:]
             while to_read > 0: