Remove duplicate echo command (#15863)

Content.Server/Utility/Commands/EchoCommand.cs

@@ -1,21 +0,0 @@
-using Content.Shared.Administration;
-using Robust.Shared.Console;
-
-namespace Content.Server.Utility.Commands
-{
-    [AnyCommand]
-    sealed class EchoCommand : IConsoleCommand
-    {
-        public string Command => "echo";
-
-        public string Description => Loc.GetString("echo-command-description");
-
-        public string Help => Loc.GetString("echo-command-help-text", ("command", Command));
-
-        public void Execute(IConsoleShell shell, string argStr, string[] args)
-        {
-            if (argStr.Length > Command.Length)
-                shell.WriteLine(argStr.Substring(Command.Length + 1));
-        }
-    }
-}

Resources/Locale/en-US/utility/commands/echo-command.ftl

@@ -1,2 +0,0 @@
-echo-command-description = Prints parameter into console
-echo-command-help-text = Usage: {$command} <text>

Resources/clientCommandPerms.yml

@@ -1,5 +1,6 @@
 # Available to everybody
 - Commands:
+    - echo
     - disconnect
     - help
     - list