stream: remove unused stream_read_unblock

The one place this was being used in BGP is now gone,
can remove deprecated interface.
Acked-by: Feng Lu <lu.feng@6wind.com>
diff --git a/lib/stream.c b/lib/stream.c
index 0fc3c3b..c6f20c8 100644
--- a/lib/stream.c
+++ b/lib/stream.c
@@ -754,32 +754,6 @@
   return nbytes;
 }
 
-/* Read size from fd. */
-int
-stream_read_unblock (struct stream *s, int fd, size_t size)
-{
-  int nbytes;
-  int val;
-  
-  STREAM_VERIFY_SANE(s);
-  
-  if (STREAM_WRITEABLE (s) < size)
-    {
-      STREAM_BOUND_WARN (s, "put");
-      return 0;
-    }
-  
-  val = fcntl (fd, F_GETFL, 0);
-  fcntl (fd, F_SETFL, val|O_NONBLOCK);
-  nbytes = read (fd, s->data + s->endp, size);
-  fcntl (fd, F_SETFL, val);
-
-  if (nbytes > 0)
-    s->endp += nbytes;
-  
-  return nbytes;
-}
-
 ssize_t
 stream_read_try(struct stream *s, int fd, size_t size)
 {
diff --git a/lib/stream.h b/lib/stream.h
index f0c742c..1fc382d 100644
--- a/lib/stream.h
+++ b/lib/stream.h
@@ -193,10 +193,6 @@
    Use stream_read_try instead.  */
 extern int stream_read (struct stream *, int, size_t);
 
-/* Deprecated: all file descriptors should already be non-blocking.
-   Will be removed.  Use stream_read_try instead. */
-extern int stream_read_unblock (struct stream *, int, size_t);
-
 /* Read up to size bytes into the stream.
    Return code:
      >0: number of bytes read