s1d13xxxfb: drop unused code

Silence warnings such as -

drivers/video/s1d13xxxfb.c:421: warning: ‘bltbit_wait_bitset’ defined but not used

Just drop the unused code.
Signed-off-by: NAndres Salomon <dilinger@queued.net>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

drivers/video/s1d13xxxfb.c

@@ -409,28 +409,6 @@ s1d13xxxfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
  functions to handle bitblt acceleration
  ************************************************************/
 
-/**
- *	bltbit_wait_bitset - waits for change in register value
- *	@info : framebuffer structure
- *	@bit  : value expected in register
- *	@timeout : ...
- *
- *	waits until value changes INTO bit
- */
-static u8
-bltbit_wait_bitset(struct fb_info *info, u8 bit, int timeout)
-{
-	while (!(s1d13xxxfb_readreg(info->par, S1DREG_BBLT_CTL0) & bit)) {
-		udelay(10);
-		if (!--timeout) {
-			dbg_blit("wait_bitset timeout\n");
-			break;
-		}
-	}
-
-	return timeout;
-}
-
 /**
  *	bltbit_wait_bitclear - waits for change in register value
  *	@info : frambuffer structure
@@ -454,34 +432,6 @@ bltbit_wait_bitclear(struct fb_info *info, u8 bit, int timeout)
 	return timeout;
 }
 
-/**
- *	bltbit_fifo_status - checks the current status of the fifo
- *	@info : framebuffer structure
- *
- *	returns number of free words in buffer
- */
-static u8
-bltbit_fifo_status(struct fb_info *info)
-{
-	u8 status;
-
-	status = s1d13xxxfb_readreg(info->par, S1DREG_BBLT_CTL0);
-
-	/* its empty so room for 16 words */
-	if (status & BBLT_FIFO_EMPTY)
-		return 16;
-
-	/* its full so we dont want to add */
-	if (status & BBLT_FIFO_FULL)
-		return 0;
-
-	/* its atleast half full but we can add one atleast */
-	if (status & BBLT_FIFO_NOT_FULL)
-		return 1;
-
-	return 0;
-}
-
 /*
  *	s1d13xxxfb_bitblt_copyarea - accelerated copyarea function
  *	@info : framebuffer structure

include/video/s1d13xxxfb.h

@@ -136,12 +136,6 @@
 #define S1DREG_DELAYOFF			0xFFFE
 #define S1DREG_DELAYON			0xFFFF
 
-#define BBLT_FIFO_EMPTY			0x00
-#define BBLT_FIFO_NOT_EMPTY		0x40
-#define BBLT_FIFO_NOT_FULL		0x30
-#define BBLT_FIFO_HALF_FULL		0x20
-#define BBLT_FIFO_FULL			0x10
-
 #define BBLT_SOLID_FILL			0x0c