Revert "Settings: add development animation transition mode 0.75"

This reverts commit e33a1c8283a26c223024096053c15633d49d4358.

the next commit (.25) has some conflicts derps so lazy fix:
revert & apply the new commit from slim's kk, that has both .25 & .75

Change-Id: I15e67e1e49f5d8208389d5226eea7ed0a8f51cc7
Settings: add development animation transition mode 0.75 and 0.25

Change-Id: Iaaeb3757ef9b3b97d66d929629e9035ab511f72a