am43xx: Drop non-DM_I2C code

On this platform, we have DM_I2C and SPL_DM_I2C always enabled.
Remove legacy options.

Cc: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
Acked-by: Lokesh Vutla <lokeshvutla@ti.com>
1 file changed