Doc: Remove \fn lines adjacent to functions

They are unneeded, some of them are unmaintained

Change-Id: I0ad87e152d8e2328b486b2f904f7cf9613004afe
Reviewed-by: Eike Ziller <eike.ziller@digia.com>
Fix compilation

Change-Id: I269013c06dd540309b95cf1411bbc3571df2c5b5
Reviewed-by: Orgad Shaneh <orgads@gmail.com>