Fix handling of custom characters. ccmode was not reset on screen clear().

Remove unused ccmode from serialPOS.

server/drivers/serialPOS.c

@@ -132,17 +132,6 @@ typedef enum {
 } AEDEXCommands;
 
 
-typedef enum {
-	standard,	/* only char 0 is used for heartbeat */
-	vbar,		/* vertical bars */
-	hbar,		/* horizontal bars */
-	custom,		/* custom settings */
-	bignum,		/* big numbers */
-	bigchar		/* big characters */
-} CGmode;
-
-
-
 /** private data for the \c serialPOS driver */
 typedef struct serialPOS_private_data {
 	int fd;			/**< LCD file descriptor */
@@ -155,9 +144,6 @@ typedef struct serialPOS_private_data {
 	unsigned char *framebuf;
 	unsigned char *backingstore;
 
-	/* defineable characters */
-	CGmode ccmode;
-
 	/* feature enable */
 	int hardwrap;
 	int hardscroll;