cmd: remove deprecated LCD support

No board uses lcd_clear() anymore. So we can remove support for it.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
diff --git a/cmd/cls.c b/cmd/cls.c
index 502d5ed..ba36220 100644
--- a/cmd/cls.c
+++ b/cmd/cls.c
@@ -8,7 +8,6 @@
 #include <common.h>
 #include <command.h>
 #include <dm.h>
-#include <lcd.h>
 #include <video.h>
 
 #define CSI "\x1b["
@@ -20,19 +19,12 @@
 
 	/*  Send clear screen and home */
 	printf(CSI "2J" CSI "1;1H");
-#if defined(CONFIG_DM_VIDEO)
-#if !defined(CONFIG_VIDEO_ANSI)
-	if (uclass_first_device_err(UCLASS_VIDEO, &dev))
-		return CMD_RET_FAILURE;
-
-	if (video_clear(dev))
-		return CMD_RET_FAILURE;
-#endif
-#elif defined(CONFIG_LCD)
-	lcd_clear();
-#else
-	return CMD_RET_FAILURE;
-#endif
+	if (CONFIG_IS_ENABLED(DM_VIDEO) && !CONFIG_IS_ENABLED(VIDEO_ANSI)) {
+		if (uclass_first_device_err(UCLASS_VIDEO, &dev))
+			return CMD_RET_FAILURE;
+		if (video_clear(dev))
+			return CMD_RET_FAILURE;
+	}
 	return CMD_RET_SUCCESS;
 }