of: remove unused pci_space variable from address.c

It was never used and could be removed, otherwise
we could see a warning:

drivers/of/address.c: In function 'of_pci_range_parser_one':
drivers/of/address.c:277:14: warning: variable 'pci_space' set but not
used [-Wunused-but-set-variable]
Signed-off-by: NShawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: NRob Herring <robh@kernel.org>

drivers/of/address.c

@@ -274,10 +274,9 @@ struct of_pci_range *of_pci_range_parser_one(struct of_pci_range_parser *parser,
 
 	/* Now consume following elements while they are contiguous */
 	while (parser->range + parser->np <= parser->end) {
-		u32 flags, pci_space;
+		u32 flags;
 		u64 pci_addr, cpu_addr, size;
 
-		pci_space = be32_to_cpup(parser->range);
 		flags = of_bus_pci_get_flags(parser->range);
 		pci_addr = of_read_number(parser->range + 1, ns);
 		cpu_addr = of_translate_address(parser->node,