ppc: there is no clear_pages to export

Fixes: 9445aa1a30 ("ppc: move exports to definitions")
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Michal Marek <mmarek@suse.com>

arch/powerpc/kernel/misc_32.S

@@ -453,7 +453,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE)
 	stw	r7,8(r3);	\
 	stw	r8,12(r3);	\
 	stwu	r9,16(r3)
-EXPORT_SYMBOL(clear_pages)
 
 _GLOBAL(copy_page)
 	addi	r3,r3,-4