Revert "msm_fb: display: change TE simulation and read pointer interrupt timing"

This reverts commit d5eb98630ea82bb6df84749859571b89ac4238eb.

Revert reason: the current XT907 display panel driver is not ready for
this, it causes performance issues there.

Change-Id: I201ec6e2c9c51846fe61a445d5d20b0fe6b7b4b9