Merge pull request #77 from ravage84/no-version-mentions

Do not mention PHP support

Author: Crell

spec.md

@@ -443,8 +443,7 @@ class Talker
 
 Visibility MUST be declared on all properties.
 
-Visibility MUST be declared on all constants if your project PHP minimum
-version supports constant visibilities (PHP 7.1 or later).
+Visibility MUST be declared on all constants.
 
 The `var` keyword MUST NOT be used to declare a property.