arm64: remove obsolete selection of MULTI_IRQ_HANDLER

The arm64 config selects MULTI_IRQ_HANDLER, which was renamed to
GENERIC_IRQ_MULTI_HANDLER by commit 4c301f9b ("ARM: Convert
to GENERIC_IRQ_MULTI_HANDLER"). The 'new' option is already
selected, so just remove the obsolete entry.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

arch/arm64/Kconfig

@@ -159,7 +159,6 @@ config ARM64
 	select IRQ_DOMAIN
 	select IRQ_FORCED_THREADING
 	select MODULES_USE_ELF_RELA
-	select MULTI_IRQ_HANDLER
 	select NEED_DMA_MAP_STATE
 	select NEED_SG_DMA_LENGTH
 	select OF