disabling tp4

As announced on last week's platform meeting, this week we would like to disable tp4 as we have been running tp5 side by side and without issues*.


We have not heard any concerns on disabling tp4 so we will do so on Thursday June 30th.

If you have anything to add please do so at bug 664831.

* The only issues were to adjust tbpl and compare-locales to show tp5 which are fixed

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