clk: mediatek: mt8516: Remove unused variable

Variable 'ddrphycfg_parents' is defined static and initialized, but not
used in the file.

../drivers/clk/mediatek/clk-mt8516.c:234:27: warning: ‘ddrphycfg_parents’ defined but not used [-Wunused-const-variable=]
 static const char * const ddrphycfg_parents[] __initconst = {
                           ^~~~~~~~~~~~~~~~~
Signed-off-by: Philippe Mazenauer <philippe.mazenauer@outlook.de>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/mediatek/clk-mt8516.c

@@ -231,11 +231,6 @@ static const char * const nfi1x_pad_parents[] __initconst = {
 	"nfi1x_ck"
 };
 
-static const char * const ddrphycfg_parents[] __initconst = {
-	"clk26m_ck",
-	"mainpll_d16"
-};
-
 static const char * const usb_78m_parents[] __initconst = {
 	"clk_null",
 	"clk26m_ck",