remove what should be dead code

While old propellor's can emit Ready, they won't if they've managed to
updateFirst. If updateFirst fails due to eg, inaccessiable central repo,
those old propellor's are not able to receive inline git pushes anyway,
so are not going to update no matter what, so no point in making --spin
work in that case.

src/Propellor/CmdLine.hs

@@ -233,16 +233,6 @@ spin hn hst = do
 			hClose fromh
 			sendGitClone hn
 			comm cacheparams privdata
-		-- Ready is only sent by old versions of
-		-- propellor. They expect to get privdata,
-		-- and then no more protocol communication.
-		dispatch (Just Ready) = do
-			sendprivdata toh privdata
-			hClose toh
-			-- Display remaining output.
-			void $ tryIO $ forever $
-				putStrLn =<< hGetLine fromh
-			hClose fromh
 		dispatch Nothing = return ()
 	
 	user = "root@"++hn

src/Propellor/Protocol.hs

@@ -9,7 +9,7 @@ import Data.List
 
 import Propellor
 
-data Stage = Ready | NeedGitClone | NeedRepoUrl | NeedPrivData | NeedGitPush
+data Stage = NeedGitClone | NeedRepoUrl | NeedPrivData | NeedGitPush
 	deriving (Read, Show, Eq)
 
 type Marker = String