x86/vmlinux.lds.S: Remove conditional definition of LOAD_OFFSET

In vmlinux.lds.S, we define LOAD_OFFSET conditionally to __PAGE_OFFSET
or __START_KERNEL_map. While __START_KERNEL_map is already defined to
the same value with the same condition.

So it is fine to define LOAD_OFFSET to __START_KERNEL_map directly.

Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20240313075839.8321-4-richard.weiyang@gmail.com

Author: RichardWeiYang

arch/x86/kernel/vmlinux.lds.S

@@ -15,11 +15,7 @@
  * put it inside the section definition.
  */
 
-#ifdef CONFIG_X86_32
-#define LOAD_OFFSET __PAGE_OFFSET
-#else
 #define LOAD_OFFSET __START_KERNEL_map
-#endif
 
 #define RUNTIME_DISCARD_EXIT
 #define EMITS_PT_NOTE