[ALSA] Remove unneeded read/write_size fields in proc text ops

Remove unneeded read/write_size fields in proc text ops.
snd_info_set_text_ops() is fixed, too.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/isa/gus/gus_mem.c b/sound/isa/gus/gus_mem.c
index 3c0d27a..f50c276 100644
--- a/sound/isa/gus/gus_mem.c
+++ b/sound/isa/gus/gus_mem.c
@@ -264,10 +264,8 @@
 	if (snd_gf1_mem_xalloc(alloc, &block) == NULL)
 		return -ENOMEM;
 #ifdef CONFIG_SND_DEBUG
-	if (! snd_card_proc_new(gus->card, "gusmem", &entry)) {
-		snd_info_set_text_ops(entry, gus, 1024, snd_gf1_mem_info_read);
-		entry->c.text.read_size = 256 * 1024;
-	}
+	if (! snd_card_proc_new(gus->card, "gusmem", &entry))
+		snd_info_set_text_ops(entry, gus, snd_gf1_mem_info_read);
 #endif
 	return 0;
 }