Revert "Bug 1017327 - (Part II) Let KeyboardManager use it" for breaking gaia ui tests

This reverts commit 4ebaf831eb6ac05b34447e7d4c6e97adc2be1873.
Revert "Bug 1017327 - (Part I) Implement InputAppsTransitionManager" for breaking gaia ui tests

This reverts commit 3ebe122af79bc73da07b710af0d1fcf3d79601e7.