rtl/usb_phy: Remove the LATCH_INPUT_VALUE

Not needed because that PIN_MODE doesn't use it and
it's bad practice to have it set since it's shared for
the whole bank.

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>

rtl/usb_phy.v

@@ -47,7 +47,6 @@ module usb_phy #(
 				.IO_STANDARD("SB_LVCMOS")
 			) io_dp_I (
 				.PACKAGE_PIN(pad_dp),
-				.LATCH_INPUT_VALUE(1'b0),
 				.CLOCK_ENABLE(1'b1),
 				.INPUT_CLK(clk),
 				.OUTPUT_CLK(clk),
@@ -65,7 +64,6 @@ module usb_phy #(
 				.IO_STANDARD("SB_LVCMOS")
 			) io_dn_I (
 				.PACKAGE_PIN(pad_dn),
-				.LATCH_INPUT_VALUE(1'b0),
 				.CLOCK_ENABLE(1'b1),
 				.INPUT_CLK(clk),
 				.OUTPUT_CLK(clk),