Remove validateEmail entirely (#294).

snippets/validateEmail.md

@@ -1,12 +0,0 @@
-### validateEmail
-
-Returns `true` if the given string is a valid  email, `false` otherwise.
-
-Use a regular expression to check if the email is valid.
-Returns `true` if email is valid, `false` if not.
-
-```js
-const validateEmail = str =>
-  /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/.test(str);
-// validateEmail(mymail@gmail.com) -> true
-```