Phaser: Remove support for early board versions

At this point, support for the early board versions can be removed.
This leaves the board code cleaner, and provides a better starting
point for any follower projects.

BUG=b:128413812
BRANCH=octopus
TEST=builds

Change-Id: I0eda3ecc5b33bfe0721a0fa9d59f7884a0d3732e
Signed-off-by: Diana Z <dzigterman@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1525066
Reviewed-by: Karthikeyan Ramasubramanian <kramasub@chromium.org>
Reviewed-by: Jett Rink <jettrink@chromium.org>

board/phaser/board.c

diff --git a/board/phaser/board.c b/board/phaser/board.c
index 3ced43d..630662a 100644
--- a/board/phaser/board.c
+++ b/board/phaser/board.c
@@ -210,18 +210,6 @@
 	}
 }
 
-/* This method can be removed once version 3+ boards are the majority */
-static void board_update_gpio_from_board_id(uint32_t board_id)
-{
-	/*
-	 * GPIO83 used to be USB_OTG which is unused on the SoC side, but is
-	 * a 1.8V signal.
-	 */
-	if (board_id < 3) {
-		gpio_set_flags(GPIO_USB_C0_PD_RST, GPIO_ODR_LOW);
-	}
-}
-
 static void cbi_init(void)
 {
 	uint32_t val;
@@ -230,9 +218,6 @@
 		sku_id = val;
 	ccprints("SKU: 0x%04x", sku_id);
 
-	if (cbi_get_board_version(&val) == EC_SUCCESS)
-		board_update_gpio_from_board_id(val);
-
 	board_update_sensor_config_from_sku();
 }
 DECLARE_HOOK(HOOK_INIT, cbi_init, HOOK_PRIO_INIT_I2C + 1);