Help How to Remove safely Webview chromium from (Kitkat) framework

Hello,

My phone S4 mini i9195 (stock rom gt 9195) Rooted / supersu)

How to remove safely webview chromium from Android kitkat 4.4.2 framework.

and / or

How to remove webview from k9-mail and other APK.


I have apk editor, xml editor, lucky patcher, titanium backup... but i dont know what line remove for disable webview of apk.


Thanks you very much for your participation.
Sorry for bad english. I am french.