Staging: epl: hr timers all run in hard irq context now

Because of this, we can't set the mode for the timer, so delete this
code as it causes a build error right now.

Cc: Daniel Krueger <daniel.krueger@systec-electronic.com>
Cc: Ronald Sieber <Ronald.Sieber@systec-electronic.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>