snippets: only include known snippets

[ludovic-gonthier]

Description

remove all the snippets library to only include personnal snippets.

Snippets Lists

PHP:

• Class Creation
• Constructor
• [public,protected,private] method
• [getter, setter, gettersetter] method
• PHPDoc: method [@param, @throws, @return]
• PHPDoc: inerhitdoc
• PHPUnit: testcase
• PHPUnit: dataprovider
• PHPUnit: test