x86: Drop RESET_SEG_SIZE

This is not used anywhere now, so drop it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 0de3f6e..17a6fe6 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -207,11 +207,6 @@
 	depends on X86_RESET_VECTOR
 	default 0xffff0000
 
-config RESET_SEG_SIZE
-	hex
-	depends on X86_RESET_VECTOR
-	default 0x10000
-
 config RESET_VEC_LOC
 	hex
 	depends on X86_RESET_VECTOR
diff --git a/arch/x86/cpu/config.mk b/arch/x86/cpu/config.mk
index e5a393a..8f9814c 100644
--- a/arch/x86/cpu/config.mk
+++ b/arch/x86/cpu/config.mk
@@ -7,7 +7,6 @@
 
 # DO NOT MODIFY THE FOLLOWING UNLESS YOU REALLY KNOW WHAT YOU ARE DOING!
 LDPPFLAGS += -DRESET_SEG_START=$(CONFIG_RESET_SEG_START)
-LDPPFLAGS += -DRESET_SEG_SIZE=$(CONFIG_RESET_SEG_SIZE)
 LDPPFLAGS += -DRESET_VEC_LOC=$(CONFIG_RESET_VEC_LOC)
 LDPPFLAGS += -DSTART_16=$(CONFIG_SYS_X86_START16)