OMAP3 SmartReflex: get rid of custom clocks

smartreflex.c defines some custom clocks that don't have clockdomains
associated with them, which is now disallowed.  The custom clocks are
not actually needed, so remove them.  This patch should not cause any
functional change.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Kalle Jokiniemi <ext-kalle.jokiniemi@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>