[3.12] Remove an inaccurate note from socket.recv (GH-129733) (#129735)

Remove an inaccurate note from `socket.recv` (GH-129733)

Remove an inaccurate note from socket.recv.
(cherry picked from commit ded54c3)

Co-authored-by: Gregory P. Smith <[email protected]>

Author: miss-islington

Doc/library/socket.rst

@@ -1646,11 +1646,6 @@ to sockets.
    See the Unix manual page :manpage:`recv(2)` for the meaning of the optional argument
    *flags*; it defaults to zero.
 
-   .. note::
-
-      For best match with hardware and network realities, the value of  *bufsize*
-      should be a relatively small power of 2, for example, 4096.
-
    .. versionchanged:: 3.5
       If the system call is interrupted and the signal handler does not raise
       an exception, the method now retries the system call instead of raising