fix: remove unused code

Author: drujensen

lightbug_http/service.mojo

@@ -5,11 +5,6 @@ trait HTTPService:
     fn func(self, req: HTTPRequest) raises -> HTTPResponse:
         ...
 
-@value
-struct HelloWorld(HTTPService):
-    fn func(self, req: HTTPRequest) raises -> HTTPResponse:
-        return OK("Hello, World!".as_bytes(), "text/plain")
-
 @value
 struct Printer(HTTPService):
     fn func(self, req: HTTPRequest) raises -> HTTPResponse: