device: Drop unused HyperTransport code

Only two definitions are actually used somewhere, the rest is unused.

Change-Id: Iec52d0d47fce6a1ec5455b670824b995a7a34a4c
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47407
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/device/Kconfig

@@ -491,18 +491,6 @@ config MMCONF_SUPPORT
 	bool
 	default !NO_MMCONF_SUPPORT
 
-config HYPERTRANSPORT_PLUGIN_SUPPORT
-	bool
-	default n
-
-config HT_CHAIN_UNITID_BASE
-	int
-	default 0
-
-config HT_CHAIN_END_UNITID_BASE
-	int
-	default 0
-
 config PCIX_PLUGIN_SUPPORT
 	bool
 	default y