Remove AutoGenerated struct comment

Not really needed now the code's been written fully, and also slightly
misleading since the JSON the site provides has now changed.

main.go

@@ -7,40 +7,6 @@ import (
 	"os"
 )
 
-/* Full mail struct for posterity; generated from https://mholt.github.io/json-to-go/
-type AutoGenerated struct {
-	Data struct {
-		Fromfull string `json:"fromfull"`
-		Headers struct {
-			MimeVersion string `json:"mime-version"`
-			Date string `json:"date"`
-			Subject string `json:"subject"`
-			XSgEid string `json:"x-sg-eid"`
-			MessageID string `json:"message-id"`
-			Received string `json:"received"`
-			From string `json:"from"`
-			ContentType string `json:"content-type"`
-			To string `json:"to"`
-			DkimSignature string `json:"dkim-signature"`
-		} `json:"headers"`
-		Subject string `json:"subject"`
-		RequestID string `json:"requestId"`
-		Parts []struct {
-			Headers struct {
-				ContentTransferEncoding string `json:"content-transfer-encoding"`
-				ContentType string `json:"content-type"`
-			} `json:"headers"`
-			Body string `json:"body"`
-		} `json:"parts"`
-		From string `json:"from"`
-		Origfrom string `json:"origfrom"`
-		To string `json:"to"`
-		ID string `json:"id"`
-		Time int64 `json:"time"`
-		SecondsAgo int `json:"seconds_ago"`
-	} `json:"data"`
-} */
-
 type mail struct {
 	Data struct {
 		Subject string `json:"subject"`