EDAC/thunderx: Remove unused struct error_syndrome

struct error_syndrome appears never to have been used. Remove it,
together with the MAX_SYNDROME_REGS it used.
Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20240516133404.251397-1-linux@treblig.org

drivers/edac/thunderx_edac.c

@@ -35,12 +35,6 @@ enum {
 	ERR_UNKNOWN	= 3,
 };
 
-#define MAX_SYNDROME_REGS 4
-
-struct error_syndrome {
-	u64 reg[MAX_SYNDROME_REGS];
-};
-
 struct error_descr {
 	int	type;
 	u64	mask;