[3/3] ssh/readconf.c: Remove deprecated/unsupported opcodes

[Martin]

Hey!

Final part: Remove deprecated/always unsupported opcodes from the enum. This is
already the case for the majority of the deprecated/always unsupported opcodes.

Best,

Martin

diff --git readconf.c readconf.c
index c2c3d55b656..cc845c6fc16 100644
--- readconf.c
+++ readconf.c
@@ -130,15 +130,15 @@ typedef enum {
        oHost, oMatch, oInclude,
        oForwardAgent, oForwardX11, oForwardX11Trusted, oForwardX11Timeout,
        oGatewayPorts, oExitOnForwardFailure,
-       oPasswordAuthentication, oRSAAuthentication,
+       oPasswordAuthentication,
        oChallengeResponseAuthentication, oXAuthLocation,
-       oIdentityFile, oHostname, oPort, oCipher, oRemoteForward, oLocalForward,
+       oIdentityFile, oHostname, oPort, oRemoteForward, oLocalForward,
        oCertificateFile, oAddKeysToAgent, oIdentityAgent,
-       oUser, oEscapeChar, oRhostsRSAAuthentication, oProxyCommand,
+       oUser, oEscapeChar, oProxyCommand,
        oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts,
        oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression,
-       oCompressionLevel, oTCPKeepAlive, oNumberOfPasswordPrompts,
-       oUsePrivilegedPort, oLogFacility, oLogLevel, oCiphers, oMacs,
+       oTCPKeepAlive, oNumberOfPasswordPrompts,
+       oLogFacility, oLogLevel, oCiphers, oMacs,
        oPubkeyAuthentication,
        oKbdInteractiveAuthentication, oKbdInteractiveDevices, oHostKeyAlias,
        oDynamicForward, oPreferredAuthentications, oHostbasedAuthentication,