- Removed usage of obsolete methods

- Removed unneeded argument from ValidateQuery in Searches.cs
- Using split query when loading all guild configs

src/NadekoBot/Db/Extensions/GuildConfigExtensions.cs

@@ -45,9 +45,9 @@ public static class GuildConfigExtensions
 
     private static IQueryable<GuildConfig> IncludeEverything(this DbSet<GuildConfig> configs)
     {
-        // todo split query
         return configs
                 .AsQueryable()
+                .AsSplitQuery()
                 .Include(gc => gc.CommandCooldowns)
                 .Include(gc => gc.FollowedStreams)
                 .Include(gc => gc.StreamRole)