removed redundant(?) methods hash. gave warnings

[dnmfarrell]

Hey,

This line was emitting a warning:

Code object coerced to string (please use .gist or .perl to do that)  in method new at lib/HTTP/Server/Simple.pm6:24

I couldn't see %methods being used anywhere so I removed the line.

Thanks

[dnmfarrell]

Or if it is being used, maybe change it to:

 my %methods = self.^methods.map({.gist}) Z 1..*;

(untested)