ARM: dts: LogicPD Torpedo: Revert Duplicative Entries

Revert commit 7cd6ca77

 ("ARM: dts: Change I2C2 and I2C3 to 400KHz
for LogicPD Torpedo DM3730 devkit")  It was already done and it is
just a duplicate.

Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>