mmc: meson-mx-sdhc: Drop unused MESON_SDHC_NUM_BUILTIN_CLKS macro

Remove MESON_SDHC_NUM_BUILTIN_CLKS because it is not used anywhere in
the driver.
Signed-off-by: NMartin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20211219153442.463863-3-martin.blumenstingl@googlemail.comSigned-off-by: NUlf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/meson-mx-sdhc-clkc.c

@@ -12,8 +12,6 @@
 
 #include "meson-mx-sdhc.h"
 
-#define MESON_SDHC_NUM_BUILTIN_CLKS	6
-
 struct meson_mx_sdhc_clkc {
 	struct clk_mux			src_sel;
 	struct clk_divider		div;