drm/vc4: hdmi: Remove unused CEC_CLOCK_DIV define

The CEC_CLOCK_DIV define is not used anywhere in the driver, let's remove
it.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Tested-by: Chanwoo Choi <cw00.choi@samsung.com>
Tested-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Link: https://patchwork.freedesktop.org/patch/msgid/53805cc47e99a137e5f08c92fb781cc2e2134299.1599120059.git-series.maxime@cerno.tech

drivers/gpu/drm/vc4/vc4_hdmi.c

@@ -55,7 +55,6 @@
 
 #define HSM_CLOCK_FREQ 163682864
 #define CEC_CLOCK_FREQ 40000
-#define CEC_CLOCK_DIV  (HSM_CLOCK_FREQ / CEC_CLOCK_FREQ)
 
 static int vc4_hdmi_debugfs_regs(struct seq_file *m, void *unused)
 {