The shell functions in profiles/functions related to irqbalance configuration
have been unused since 462df2610c. Remove them.
Signed-off-by: Adriaan Schmidt <adriaan.schmidt@siemens.com>
In #615, they were accidentally moved to /usr/lib/tuned/profiles/
where all profiles were migrated.
This also changes the location of `functions` file within
the repository, separating it from the profiles themselves.
Resolves#642.