Remove Recipe Puppy

This API is broken. 

Return: HTTP Code 500

Ref: https://github.com/public-apis/public-apis/runs/3366734717?check_suite_focus=true#step:3:13

README.md

@@ -468,7 +468,6 @@ API | Description | Auth | HTTPS | CORS |
 | [Open Brewery DB](https://www.openbrewerydb.org) | Breweries, Cideries and Craft Beer Bottle Shops | No | Yes | Yes |
 | [Open Food Facts](https://world.openfoodfacts.org/data) | Food Products Database | No | Yes | Unknown |
 | [PunkAPI](https://punkapi.com/) | Brewdog Beer Recipes | No | Yes | Unknown |
-| [Recipe Puppy](http://www.recipepuppy.com/about/api/) | Food | No | No | Unknown |
 | [Spoonacular](https://spoonacular.com/food-api) | Recipes and Food product | `apiKey` | Yes | Unknown |
 | [TacoFancy](https://github.com/evz/tacofancy-api) | Community-driven taco database | No | No | Unknown |
 | [The Report of the Week](https://github.com/andyklimczak/TheReportOfTheWeek-API) | Food & Drink Reviews | No | Yes | Unknown |