internal/iana: update protocol numbers

Change-Id: I88b1fac3419f3e655a11cb22050fcd9a9a6c6616
Reviewed-on: https://go-review.googlesource.com/19786
Reviewed-by: Ian Lance Taylor <iant@golang.org>

internal/iana/const.go

@@ -38,7 +38,7 @@ const (
 	CongestionExperienced = 0x3 // CE (Congestion Experienced)
 )
 
-// Protocol Numbers, Updated: 2015-06-23
+// Protocol Numbers, Updated: 2015-10-06
 const (
 	ProtocolIP             = 0   // IPv4 encapsulation, pseudo protocol number
 	ProtocolHOPOPT         = 0   // IPv6 Hop-by-Hop Option
@@ -54,7 +54,6 @@ const (
 	ProtocolBBNRCCMON      = 10  // BBN RCC Monitoring
 	ProtocolNVPII          = 11  // Network Voice Protocol
 	ProtocolPUP            = 12  // PUP
-	ProtocolARGUS          = 13  // ARGUS
 	ProtocolEMCON          = 14  // EMCON
 	ProtocolXNET           = 15  // Cross Net Debugger
 	ProtocolCHAOS          = 16  // Chaos