repochecker: Fix number of detected choices with step attribute

admin/sync/exercice_keys.go

@@ -286,7 +286,6 @@ func iface2Number(input interface{}, output *string) error {
 			*output = fmt.Sprintf("%d", v)
 		} else if v, ok := input.(float64); ok {
 			*output = strconv.FormatFloat(v, 'f', -1, 64)
-			fmt.Printf("%s\n", *output)
 		} else {
 			return fmt.Errorf("has an invalid type: expected int or float, got %T", input)
 		}