barectf-platform-linux-fs.h: remove function documentation
barectf-platform-linux-fs.h: remove function documentation

This is now in the local `README.adoc` file.

Signed-off-by: Philippe Proulx <2096628897b40c93960fdd9e24c9c883a54d4fe9@gmail.com>

efficios/barectf,efficios/barectf