ARM: dts: omap4.dtsi: remove dss_fck

"dss_fck" is a hacky clock, used to work around problems with MODULEMODE
bit handling in DSS hwmods.

These problems have now been solved, so we can remove the dss_fck clock.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Archit Taneja <archit.taneja@gmail.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>

arch/arm/boot/dts/omap44xx-clocks.dtsi

@@ -1018,14 +1018,6 @@ dss_48mhz_clk: dss_48mhz_clk {
 		reg = <0x1120>;
 	};
 
-	dss_fck: dss_fck {
-		#clock-cells = <0>;
-		compatible = "ti,gate-clock";
-		clocks = <&l3_div_ck>;
-		ti,bit-shift = <1>;
-		reg = <0x1120>;
-	};
-
 	fdif_fck: fdif_fck {
 		#clock-cells = <0>;
 		compatible = "ti,divider-clock";