[MIPS] MTX1: remove unneeded settings

This patch removes unnecessary settings at setup time.

Signed-off-by: Florian Fainelli <[e-mail]>
Signed-off-by: Ralf Baechle <[e-mail]>

arch/mips/au1000/mtx-1/board_setup.c

···
 #endif
 
 	// initialize sys_pinfunc:
-	// disable second ethernet port (SYS_PF_NI2)
-	// set U3/GPIO23 to GPIO23 (SYS_PF_U3)
-	au_writel( SYS_PF_NI2 | SYS_PF_U3, SYS_PINFUNC );
+	au_writel( SYS_PF_NI2, SYS_PINFUNC );
 
 	// initialize GPIO
 	au_writel( 0xFFFFFFFF, SYS_TRIOUTCLR );