sb/intel/bd82x6x: Remove unused typedef

Change-Id: If725a369e7a12fbddd7b108e557d34a13bc78c09
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59107
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

src/southbridge/intel/bd82x6x/azalia.c

@@ -12,8 +12,6 @@
 #include "chip.h"
 #include "pch.h"
 
-typedef struct southbridge_intel_bd82x6x_config config_t;
-
 static int codec_detect(u8 *base)
 {
 	u8 reg8;