[IMX8MM][MYON2] Remove unused ssc_state_video_pll()

It was removed in commit 778ca51a [IMX8MM][MYON2] Remove Trizeps related stuff

arch/arm/mach-imx/imx8m/clock_imx8mm.c

@@ -125,27 +125,6 @@ static int fracpll_configure(enum pll_clocks pll, u32 freq)
 	return 0;
 }
 
-void ssc_state_video_pll(bool enable, u32 ssc_reg)
-{
-	enum pll_clocks pll = ANATOP_VIDEO_PLL;
-	void *pll_base_video;
-	u32 value;
-
-	if(enable)
-		value = ssc_reg;
-	else
-		value = 0;
-
-	pll_base_video = &ana_pll->video_pll1_gnrl_ctl;
-	writel(value, pll_base_video + 12);
-	printf("%s: Writing 0x%08x to 0x%p (pll %d)\n", __func__, value,
-		   pll_base_video +12, pll);
-	// Enable clkout on VideoPLL1 out, devided by 16
-	// writel(0x012F0000, 0x30360128);
-
-	return;
-}
-
 #ifdef CONFIG_SPL_BUILD
 void dram_pll_init(ulong pll_val)
 {

board/seco/imx8mm_myon2/spl.c

@@ -26,8 +26,6 @@ DECLARE_GLOBAL_DATA_PTR;
 
 #include "fuse_cfg.h"
 
-extern void ssc_state_video_pll(bool enable, u32 ssc_reg);
-
 extern struct dram_timing_info dram_timing_v1r1;
 extern struct dram_timing_info dram_timing_v1r2_1GB_K4F8E304HB;
 extern struct dram_timing_info dram_timing_v1r2_1GB_K4F8E3S4HD;