Remove dead link (#131)

Author: VincentLanglet

README.md

@@ -18,7 +18,6 @@ This extension provides following rules and features:
 * Ignore caught checked exceptions ([examples](https://github.com/pepakriz/phpstan-exception-rules/blob/master/tests/src/Rules/data/try-catch.php))
 * Unnecessary `@throws` annotation detection ([examples](https://github.com/pepakriz/phpstan-exception-rules/blob/master/tests/src/Rules/data/unused-throws.php))
 * Useless `@throws` annotation detection ([examples](https://github.com/pepakriz/phpstan-exception-rules/blob/master/tests/src/Rules/data/useless-throws.php))
-* Optionally ignore descriptive `@throws` annotations ([examples](https://github.com/pepakriz/phpstan-exception-rules/blob/master/tests/src/Rules/data/unused-descriptive-throws.php))
 * Optionally allows unused `@throws` annotations in subtypes ([examples](https://github.com/pepakriz/phpstan-exception-rules/blob/master/tests/src/Rules/data/intentionally-unused-throws.php))
 * `@throws` annotation variance validation ([examples](https://github.com/pepakriz/phpstan-exception-rules/blob/master/tests/src/Rules/data/throws-inheritance.php))
 * [Dynamic throw types based on arguments](#extensibility)