mx35: Remove declaration of non-existing function

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Cc: Stefano Babic <sbabic@denx.de>
Acked-by: Stefano Babic <sbabic@denx.de>
diff --git a/arch/arm/include/asm/arch-mx35/clock.h b/arch/arm/include/asm/arch-mx35/clock.h
index 5dc53ba..e94f124 100644
--- a/arch/arm/include/asm/arch-mx35/clock.h
+++ b/arch/arm/include/asm/arch-mx35/clock.h
@@ -62,8 +62,6 @@
 	SPI2_CLK,
 };
 
-unsigned int imx_decode_pll(unsigned int pll, unsigned int f_ref);
-
 u32 imx_get_uartclk(void);
 u32 imx_get_fecclk(void);
 unsigned int mxc_get_clock(enum mxc_clock clk);