disp: msm: sde: remove sde wrapper for clock set flags

Since clock set flags api is deprecated for new target, this
change removes sde wrapper and removes LUT memeory retention logic
from crtc module.

Change-Id: If37ec780913668c1a43f8a71e79249679526bd34
Signed-off-by: Narendra Muppalla <NarendraM@codeaurora.org>

msm/sde_power_handle.h

@@ -235,17 +235,6 @@ u64 sde_power_clk_get_max_rate(struct sde_power_handle *pdata,
 struct clk *sde_power_clk_get_clk(struct sde_power_handle *phandle,
 		char *clock_name);
 
-/**
- * sde_power_clk_set_flags() - set the clock flags
- * @pdata:  power handle containing the resources
- * @clock_name: clock name to get the clk pointer.
- * @flags: flags to set
- *
- * Return: error code.
- */
-int sde_power_clk_set_flags(struct sde_power_handle *pdata,
-		char *clock_name, unsigned long flags);
-
 /**
  * sde_power_data_bus_set_quota() - set data bus quota for power client
  * @phandle:  power handle containing the resources