powerpc/vdso: Remove unused clockmode asm offsets

These offsets are not used anymore, delete them.

Fixes: c39b1dc ("powerpc/vdso: Add a page for non-time data")
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://patch.msgid.link/20241113-vdso-powerpc-asm-offsets-v1-1-3f7e589f090d@linutronix.de

Author: t-8ch

arch/powerpc/kernel/asm-offsets.c

@@ -346,8 +346,6 @@ int main(void)
 #else
 	OFFSET(CFG_SYSCALL_MAP32, vdso_arch_data, syscall_map);
 #endif
-	OFFSET(VDSO_CLOCKMODE_OFFSET, vdso_arch_data, data[0].clock_mode);
-	DEFINE(VDSO_CLOCKMODE_TIMENS, VDSO_CLOCKMODE_TIMENS);
 
 #ifdef CONFIG_BUG
 	DEFINE(BUG_ENTRY_SIZE, sizeof(struct bug_entry));