sparc32: Kill iounit_map_dma_*().

Unused.

Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc/kernel/sparc_ksyms.c

@@ -134,9 +134,6 @@ EXPORT_SYMBOL(set_auxio);
 EXPORT_SYMBOL(get_auxio);
 #endif
 EXPORT_SYMBOL(io_remap_pfn_range);
-  /* P3: iounit_xxx may be needed, sun4d users */
-/* EXPORT_SYMBOL(iounit_map_dma_init); */
-/* EXPORT_SYMBOL(iounit_map_dma_page); */
 
 #ifndef CONFIG_SMP
 EXPORT_SYMBOL(BTFIXUP_CALL(___xchg32));