Revert "exynos: Enable PSHOLD in SPL"

This reverts commit eb0dd9986c3883820ff888c3738b013c0a7d918c.
diff --git a/arch/arm/cpu/armv7/exynos/lowlevel_init.c b/arch/arm/cpu/armv7/exynos/lowlevel_init.c
index dcc270f..83e1dcf 100644
--- a/arch/arm/cpu/armv7/exynos/lowlevel_init.c
+++ b/arch/arm/cpu/armv7/exynos/lowlevel_init.c
@@ -49,8 +49,6 @@
 
 	arch_cpu_init();
 
-	set_ps_hold_ctrl();
-
 	reset_status = get_reset_status();
 
 	switch (reset_status) {