Changed crystal template, picked latest flask one

template/crystal-http/function/handler.cr

@@ -1,12 +0,0 @@
-require "http/request"
-require "http/headers"
-
-class Handler
-  def run(request : HTTP::Request)
-    {
-      body:        "Hello, Crystal. You said: #{request.body.try(&.gets_to_end)}",
-      status_code: 200,
-      headers:     HTTP::Headers{"Content-Type" => "text/plain"},
-    }
-  end
-end