ARM: uniphier: remove sLD3 SoC support

This SoC is too old.  It is difficult to maintain any longer.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/mach-uniphier/memconf.c b/arch/arm/mach-uniphier/memconf.c
index 4ced2cb..3b34e4d 100644
--- a/arch/arm/mach-uniphier/memconf.c
+++ b/arch/arm/mach-uniphier/memconf.c
@@ -15,7 +15,7 @@
 #include "init.h"
 
 static int __uniphier_memconf_init(const struct uniphier_board_data *bd,
-				   int have_ch2, int have_ch2_disable_bit)
+				   int have_ch2)
 {
 	u32 val = 0;
 	unsigned long size_per_word;
@@ -100,8 +100,7 @@
 		goto out;
 
 	if (!bd->dram_ch[2].size) {
-		if (have_ch2_disable_bit)
-			val |= SG_MEMCONF_CH2_DISABLE;
+		val |= SG_MEMCONF_CH2_DISABLE;
 		goto out;
 	}
 
@@ -149,15 +148,10 @@
 
 int uniphier_memconf_2ch_init(const struct uniphier_board_data *bd)
 {
-	return __uniphier_memconf_init(bd, 0, 0);
+	return __uniphier_memconf_init(bd, 0);
 }
 
-int uniphier_memconf_3ch_no_disbit_init(const struct uniphier_board_data *bd)
-{
-	return __uniphier_memconf_init(bd, 1, 0);
-}
-
 int uniphier_memconf_3ch_init(const struct uniphier_board_data *bd)
 {
-	return __uniphier_memconf_init(bd, 1, 1);
+	return __uniphier_memconf_init(bd, 1);
 }