Squashed: Remove TRDS

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Revert "LatinIME: make secondary chars better visible at TRDS dark keyboard"

This reverts commit 880a4282917ddb9b08571f6e324d179bba84245d.

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Revert "TRDS: Darker Keyboard"

This reverts commit cef8402c4d498213f8502646b075481e46315bbb.

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Change-Id: I756170dbff5fd69335ca49c7f88ea2391d174cbf