Now that the SRCU Kconfig option is unconditionally selected, there is
no longer any point in selecting it. Therefore, remove the "select SRCU"
Kconfig statements.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Reviewed-by: John Ogness <john.ogness@linutronix.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>