cpu/x86/smm.h: Remove smm runtime pointer from smm_loader_params

struct smm_loader_params is a struct that is passed around in the
ramstage code to set up either the relocation handler or the permanent
handler. At the moment no parameters in the stub 'smm_runtime' are
referenced so it can be dropped. The purpose is to drop the
smm_runtime struct from the stub as it is already located in the
permanent handler.

Change-Id: I09c1b649b5991f55b5ccf57f22e4a3ad4c9e4f03
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50766
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/include/cpu/x86/smm.h

@@ -151,7 +151,6 @@ struct smm_loader_params {
 	smm_handler_t handler;
 
 	struct smm_stub_params *stub_params;
-	struct smm_runtime *runtime;
 
 	/* The following are only used by X86_SMM_LOADER_VERSION2 */
 #if CONFIG(X86_SMM_LOADER_VERSION2)