meta-facebook: simplify obmc-console config

We not longer plan to support the SSH console ports for obmc-console on
our servers and want to use OpenSSH.  A lot of the obmc-console bbappend
can therefore be simplified (and we don't even need a distinction
between multi-host and single-host).

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I86269eb1fcb45a8e43271204bd303e50a8dcbaf1
diff --git a/meta-facebook/conf/recipes/fb-consoles.inc b/meta-facebook/conf/recipes/fb-consoles.inc
index 47cfcf3..2d837ca 100644
--- a/meta-facebook/conf/recipes/fb-consoles.inc
+++ b/meta-facebook/conf/recipes/fb-consoles.inc
@@ -19,5 +19,6 @@
     return " ".join(consoles[:hosts])
 
 OBMC_CONSOLE_TTYS = "${@fb_get_consoles(d)}"
+OBMC_CONSOLE_TTYS:fb-nohost = ""