Remove offline mode since it' not implemented yet

app/Cli.hs

@@ -15,8 +15,7 @@ import Options.Applicative
 
 -- TODO: add debug
 data Options = Options
-  { offline :: Bool
-  , noAnsi :: Bool
+  { noAnsi :: Bool
   , columns :: Maybe Integer
   , choice :: Choice
   }
@@ -24,8 +23,7 @@ data Options = Options
 
 optsParser :: Parser Options
 optsParser =
-  Options <$> switch (long "offline" <> short 'N' <> help "only access cache")
-          <*> switch (long "no-ansi" <> short 'A' <> help "disable ANSI codes")
+  Options <$> switch (long "no-ansi" <> short 'A' <> help "disable ANSI codes")
           <*> (Just <$> option auto (metavar "COLUMNS_NUMBER" <> long "columns" <> short 'c' <> help "number of columns")
                 <|> pure Nothing)
           <*> choiceParser

app/Main.hs

@@ -57,9 +57,7 @@ program GetTopic{topic_id} = do
 
 main :: IO ()
 main = do
-  Options{offline, noAnsi, choice} <- getOpts
-  when offline do
-    error "Offline mode is not yet implemented"
+  Options{noAnsi, choice} <- getOpts
   manager' <- newManager $
                 defaultManagerSettings
                   & (managerSetProxy $ proxyEnvironmentNamed "I2P_HTTP_PROXY" $ Just defProxy)