am33xx: Drop gpio0_7_pin_mux from phytec pcm051

This mux is not currently used and appears to be a carry-over from the
am335x evm code.

Acked-by: Lars Poeschel <poeschel@lemonage.de>
Signed-off-by: Tom Rini <trini@ti.com>

board/phytec/pcm051/mux.c

@@ -63,11 +63,6 @@ static struct module_pin_mux spi0_pin_mux[] = {
 };
 #endif
 
-static struct module_pin_mux gpio0_7_pin_mux[] = {
-	{OFFSET(ecap0_in_pwm0_out), (MODE(7) | PULLUDEN)},	/* GPIO0_7 */
-	{-1},
-};
-
 static struct module_pin_mux rmii1_pin_mux[] = {
 	{OFFSET(mii1_crs), MODE(1) | RXACTIVE},     /* RMII1_CRS */
 	{OFFSET(mii1_rxerr), MODE(1) | RXACTIVE},   /* RMII1_RXERR */