Removed some unused classes, minor cleanup. Added rider anotations to stop some annoying code suggestions

src/NadekoBot/Modules/Administration/RoleCommands.cs

@@ -28,7 +28,6 @@ public partial class Administration
             if (input.Length % 2 != 0)
                 return;
 
-            var grp = 0;
             var results = input
                 .Chunk(input.Length / 2)
                 .Select(async x =>

src/NadekoBot/Modules/Searches/StreamNotificationCommands.cs

@@ -58,7 +58,7 @@ public partial class Searches
                     fs.Type));
         }
 
-        [NadekoCommand, Usage, Description, Aliases]
+        [NadekoCommand, Aliases]
         [RequireContext(ContextType.Guild)]
         [UserPerm(GuildPerm.Administrator)]
         public async Task StreamsClear()