Modified Terminal setting for New GR-PEACH.

Modified Terminal setting of Ethernet and LED PIN for New GR-PEACH.
Delete old version terminal setting code.

We confirmed that user never use the old version GR-PEACH.
So, we deleted old version terminal setting code.
Merge pull request #733 from masaohamanaka/master

Targets: RZ_A1H - Modified Terminal setting for New GR-PEACH.