EDAC/amd8131: Remove defined but not used bridge_str

Fix the following gcc warning:

drivers/edac/amd8131_edac.c:47:21: warning: ‘bridge_str’ defined but not
used [-Wunused-const-variable=]
static char * const bridge_str[] = {
^~~~~~~~~~

Reported-by: Hulk Robot <[e-mail]>
Signed-off-by: Jason Yan <[e-mail]>
Signed-off-by: Borislav Petkov <[e-mail]>
Reviewed-by: Robert Richter <[e-mail]>
Link: https://lkml.kernel.org/r/[e-mail]

drivers/edac/amd8131_edac.c

···
 			" PCI Access Write Error at 0x%x\n", reg);
 }
 
-static char * const bridge_str[] = {
-	[NORTH_A] = "NORTH A",
-	[NORTH_B] = "NORTH B",
-	[SOUTH_A] = "SOUTH A",
-	[SOUTH_B] = "SOUTH B",
-	[NO_BRIDGE] = "NO BRIDGE",
-};
-
 /* Support up to two AMD8131 chipsets on a platform */
 static struct amd8131_dev_info amd8131_devices[] = {
 	{