Remove foreign function definitions of RECV and SEND.
Remove foreign function definitions of RECV and SEND.

Signed-off-by: Stelian Ionescu <c3ad3339b5ffc3418808e627431a7cb60f2334f3@common-lisp.net>

attila-lendvai/iolib,attila-lendvai/iolib,tiago4orion/iolib,deadtrickster/iolib,vsedach/iolib-simple-mux,lispnik/iolib,shamazmazum/iolib,sionescu/iolib,dkochmanski/iolib,shamazmazum/iolib,vsedach/iolib-simple-mux,sionescu/iolib,lispnik/iolib,lispnik/iolib,shamazmazum/iolib,sionescu/iolib,dkochmanski/iolib,tiago4orion/iolib,deadtrickster/iolib,deadtrickster/iolib,dkochmanski/iolib,attila-lendvai/iolib,tiago4orion/iolib