Remove support for discontinued Reliant/Sinix unix

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>

knetworkconf/backends/guess_system.sh

@@ -913,20 +913,6 @@ EOF
     SM[BE]S:UNIX_SV:*:*)
 	echo mips-dde-sysv${UNAME_RELEASE}
 	exit 0 ;;
-    RM*:ReliantUNIX-*:*:*)
-	echo mips-sni-sysv4
-	exit 0 ;;
-    RM*:SINIX-*:*:*)
-	echo mips-sni-sysv4
-	exit 0 ;;
-    *:SINIX-*:*:*)
-	if uname -p 2>/dev/null >/dev/null ; then
-		UNAME_MACHINE=`(uname -p) 2>/dev/null`
-		echo ${UNAME_MACHINE}-sni-sysv4
-	else
-		echo ns32k-sni-sysv
-	fi
-	exit 0 ;;
     PENTIUM:CPunix:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort
                            # says <Richard.M.Bartel@ccMail.Census.GOV>
         echo i586-unisys-sysv4