sparc64: fix build breakage introduced by percpu-convert-most patchset

Commit e74e396 incorrectly added
HAVE_LEGACY_PER_CPU_AREA to sparc64 although it already has been
converted to dynamic percpu allocator.  Drop both
HAVE_{LEGACY|DYNAMIC}_PER_CPU_AREA.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: David Miller <davem@davemloft.net>

arch/sparc/Kconfig

@@ -92,15 +92,9 @@ config AUDIT_ARCH
 	bool
 	default y
 
-config HAVE_LEGACY_PER_CPU_AREA
-	def_bool y if SPARC64
-
 config HAVE_SETUP_PER_CPU_AREA
 	def_bool y if SPARC64
 
-config HAVE_DYNAMIC_PER_CPU_AREA
-	def_bool y if SPARC64
-
 config GENERIC_HARDIRQS_NO__DO_IRQ
 	bool
 	def_bool y if SPARC64