x86/apic: Replace pointless apic:: Dest_logical usage

All these functions are only used for logical destination mode. So reading
the destination mode mask from the apic structure is a pointless
exercise. Just hand in the proper constant: APIC_DEST_LOGICAL.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201024213535.443185-7-dwmw2@infradead.org