Revert "Add an orthonormal 4-point Type-VII DST."
Revert "Add an orthonormal 4-point Type-VII DST."

This reverts commit 72c99e1aabd1817ca2de0e5b2ca4d810955752b6.

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Change-Id: I9fc350b25e710c3d5d6d8299ab5348e8b31b39ea

GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom