mn10300/PCI: Remove unused pci_mem_start

Remove unused 'pci_mem_start' variable.
Signed-off-by: Myron Stowe <myron.stowe@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: David Howells <dhowells@redhat.com>
CC: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>

arch/mn10300/include/asm/pci.h

@@ -44,7 +44,6 @@ extern void unit_pci_init(void);
 #define pcibios_assign_all_busses()	0
 #endif
 
-extern unsigned long pci_mem_start;
 #define PCIBIOS_MIN_IO		0xBE000004
 #define PCIBIOS_MIN_MEM		0xB8000000
 

arch/mn10300/kernel/setup.c

@@ -35,9 +35,6 @@
 
 struct mn10300_cpuinfo boot_cpu_data;
 
-/* For PCI or other memory-mapped resources */
-unsigned long pci_mem_start = 0x18000000;
-
 static char __initdata cmd_line[COMMAND_LINE_SIZE];
 char redboot_command_line[COMMAND_LINE_SIZE] =
 	"console=ttyS0,115200 root=/dev/mtdblock3 rw";