gth2: Remove this platform

After taking with the former maintainer, delete this platform.  The
patch is from the former maintainer.

Signed-off-by: Tom Rini <trini@ti.com>
diff --git a/common/cmd_ide.c b/common/cmd_ide.c
index 6e1e568..bae7767 100644
--- a/common/cmd_ide.c
+++ b/common/cmd_ide.c
@@ -668,8 +668,7 @@
 
 /* We only need to swap data if we are running on a big endian cpu. */
 /* But Au1x00 cpu:s already swaps data in big endian mode! */
-#if defined(__LITTLE_ENDIAN) || \
-   (defined(CONFIG_SOC_AU1X00) && !defined(CONFIG_GTH2))
+#if defined(__LITTLE_ENDIAN) || defined(CONFIG_SOC_AU1X00)
 #define input_swap_data(x,y,z) input_data(x,y,z)
 #else
 static void input_swap_data(int dev, ulong *sect_buf, int words)