ARM: omap1: Remove unused struct 'dma_link_info'

I think the last use of this was removed somewhere
around the two:
Commit 755cbfd8 ("ARM: OMAP2+: Drop sdma interrupt handling for
mach-omap2")
and
Commit 16630718 ("ARM: omap1: move plat/dma.c to mach/omap-dma.c")
Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Acked-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Link: https://lore.kernel.org/r/20240505202214.623612-1-linux@treblig.orgSigned-off-by: Kevin Hilman <khilman@baylibre.com>

arch/arm/mach-omap1/omap-dma.c

@@ -59,19 +59,6 @@ static struct omap_dma_dev_attr *d;
 static int enable_1510_mode;
 static u32 errata;
 
-struct dma_link_info {
-	int *linked_dmach_q;
-	int no_of_lchs_linked;
-
-	int q_count;
-	int q_tail;
-	int q_head;
-
-	int chain_state;
-	int chain_mode;
-
-};
-
 static int dma_lch_count;
 static int dma_chan_count;
 static int omap_dma_reserve_channels;