board: renesas: Remove empty s_init function

Default s_init weak function available, so remove the
s_init empty function.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
diff --git a/board/renesas/condor/condor.c b/board/renesas/condor/condor.c
index 91afcdd..ac28d74 100644
--- a/board/renesas/condor/condor.c
+++ b/board/renesas/condor/condor.c
@@ -18,10 +18,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-void s_init(void)
-{
-}
-
 int board_early_init_f(void)
 {
 	return 0;
diff --git a/board/renesas/draak/draak.c b/board/renesas/draak/draak.c
index c8f4b21..7d48cd1 100644
--- a/board/renesas/draak/draak.c
+++ b/board/renesas/draak/draak.c
@@ -30,10 +30,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-void s_init(void)
-{
-}
-
 #define GSX_MSTP112		BIT(12)	/* 3DG */
 #define SCIF2_MSTP310		BIT(10)	/* SCIF2 */
 #define DVFS_MSTP926		BIT(26)
diff --git a/board/renesas/ebisu/ebisu.c b/board/renesas/ebisu/ebisu.c
index d164a36..8d83727 100644
--- a/board/renesas/ebisu/ebisu.c
+++ b/board/renesas/ebisu/ebisu.c
@@ -29,10 +29,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-void s_init(void)
-{
-}
-
 int board_early_init_f(void)
 {
 	return 0;
diff --git a/board/renesas/salvator-x/salvator-x.c b/board/renesas/salvator-x/salvator-x.c
index 947bdae..c78c2a4 100644
--- a/board/renesas/salvator-x/salvator-x.c
+++ b/board/renesas/salvator-x/salvator-x.c
@@ -31,10 +31,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-void s_init(void)
-{
-}
-
 #define DVFS_MSTP926		BIT(26)
 #define HSUSB_MSTP704		BIT(4)	/* HSUSB */
 
diff --git a/board/renesas/ulcb/ulcb.c b/board/renesas/ulcb/ulcb.c
index 07bc1ec..efbffa0 100644
--- a/board/renesas/ulcb/ulcb.c
+++ b/board/renesas/ulcb/ulcb.c
@@ -29,10 +29,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-void s_init(void)
-{
-}
-
 #define DVFS_MSTP926		BIT(26)
 #define HSUSB_MSTP704		BIT(4)	/* HSUSB */