video: fbdev: sis: Fix defined but not used warning of SiS_TVDelay

Fix W=1 warning by commenting unused SiS_TVDelay* variables.

The SiS_TVDelay* variables seem to contain some magic numbers
so looks like data worth keeping around but not as code we build.

v2:
  - Update subject (Lee)
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Cc: Lee Jones <lee.jones@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20201128224114.1033617-9-sam@ravnborg.org

drivers/video/fbdev/sis/oem310.h

@@ -200,6 +200,7 @@ static const unsigned char SiS310_TVDelayCompensation_651302LV[] =	/* M650, 651,
 	0x33,0x33
 };
 
+#if 0 /* Not used */
 static const unsigned char SiS_TVDelay661_301[] =			/* 661, 301 */
 {
 	0x44,0x44,
@@ -219,6 +220,7 @@ static const unsigned char SiS_TVDelay661_301B[] =			/* 661, 301B et al */
 	0x44,0x44,
 	0x44,0x44
 };
+#endif
 
 static const unsigned char SiS310_TVDelayCompensation_LVDS[] =		/* LVDS */
 {