x86_64: there's no need to preallocate level1_fixmap_pgt

Early fixmap will allocate its own L1 pagetable page for fixmap
mappings, so there's no need to preallocate one.
Signed-off-by: NJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Stephen Tweedie <sct@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

arch/x86/kernel/head_64.S

@@ -362,12 +362,6 @@ NEXT_PAGE(level3_kernel_pgt)
 	.quad	level2_fixmap_pgt - __START_KERNEL_map + _PAGE_TABLE
 
 NEXT_PAGE(level2_fixmap_pgt)
-	.fill	506,8,0
-	.quad	level1_fixmap_pgt - __START_KERNEL_map + _PAGE_TABLE
-	/* 8MB reserved for vsyscalls + a 2MB hole = 4 + 1 entries */
-	.fill	5,8,0
-
-NEXT_PAGE(level1_fixmap_pgt)
 	.fill	512,8,0
 
 NEXT_PAGE(level2_ident_pgt)