x86: Remove .fixup section

No moar users, kill it dead.
Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: NJosh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/20211110101326.201590122@infradead.org

arch/x86/entry/vdso/vdso-layout.lds.S

@@ -77,7 +77,6 @@ SECTIONS
 
 	.text		: {
 		*(.text*)
-		*(.fixup)
 	}						:text	=0x90909090,
 
 

arch/x86/kernel/vmlinux.lds.S

@@ -137,7 +137,6 @@ SECTIONS
 		ALIGN_ENTRY_TEXT_END
 		SOFTIRQENTRY_TEXT
 		STATIC_CALL_TEXT
-		*(.fixup)
 		*(.gnu.warning)
 
 #ifdef CONFIG_RETPOLINE