disp: msm: sde: remove unused functions from sde code

Cleanup unused functions from all modules in sde driver.

Change-Id: Ia0e72ab9c281b4200a63ce35bf184e83fe1db5d2
Signed-off-by: Veera Sundaram Sankaran <veeras@codeaurora.org>

msm/sde/sde_hw_pingpong.c

@@ -268,17 +268,6 @@ static void sde_hw_pp_dsc_enable(struct sde_hw_pingpong *pp)
 	SDE_REG_WRITE(c, PP_DSC_MODE, 1);
 }
 
-static u32 sde_hw_pp_get_dsc_status(struct sde_hw_pingpong *pp)
-{
-	struct sde_hw_blk_reg_map *c;
-
-	if (!pp)
-		return 0;
-
-	c = &pp->hw;
-	return SDE_REG_READ(c, PP_DSC_MODE);
-}
-
 static void sde_hw_pp_dsc_disable(struct sde_hw_pingpong *pp)
 {
 	struct sde_hw_blk_reg_map *c;
@@ -490,7 +479,6 @@ static void _setup_pingpong_ops(struct sde_hw_pingpong_ops *ops,
 		ops->setup_dsc = sde_hw_pp_setup_dsc;
 		ops->enable_dsc = sde_hw_pp_dsc_enable;
 		ops->disable_dsc = sde_hw_pp_dsc_disable;
-		ops->get_dsc_status = sde_hw_pp_get_dsc_status;
 	}
 
 	version = SDE_COLOR_PROCESS_MAJOR(hw_cap->sblk->dither.version);