powerpc: remove "config MPC10X_OPENPIC"

The last users of Kconfig symbol MPC10X_OPENPIC were removed in v2.6.27.
Its Kconfig entry can be removed now.
Signed-off-by: NPaul Bolle <pebolle@tiscali.nl>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

arch/powerpc/platforms/embedded6xx/Kconfig

@@ -9,7 +9,6 @@ config LINKSTATION
 	select FSL_SOC
 	select PPC_UDBG_16550 if SERIAL_8250
 	select DEFAULT_UIMAGE
-	select MPC10X_OPENPIC
 	select MPC10X_BRIDGE
 	help
 	  Select LINKSTATION if configuring for one of PPC- (MPC8241)
@@ -24,7 +23,6 @@ config STORCENTER
 	select MPIC
 	select FSL_SOC
 	select PPC_UDBG_16550 if SERIAL_8250
-	select MPC10X_OPENPIC
 	select MPC10X_BRIDGE
 	help
 	  Select STORCENTER if configuring for the iomega StorCenter
@@ -84,9 +82,6 @@ config MV64X60
 	select PPC_INDIRECT_PCI
 	select CHECK_CACHE_COHERENCY
 
-config MPC10X_OPENPIC
-	bool
-
 config GAMECUBE_COMMON
 	bool