mm: remove AVR32 arch special handling in mm/Kconfig

AVR32 architecture has been removed from the Linux kernel sources, hence
clean up the special handling setting two quicklists by default in
mm/Kconfig.
Signed-off-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>

mm/Kconfig

@@ -312,7 +312,6 @@ config NEED_BOUNCE_POOL
 config NR_QUICK
 	int
 	depends on QUICKLIST
-	default "2" if AVR32
 	default "1"
 
 config VIRT_TO_BUS