Revert "HiKey/HiKey960: Set PRODUCT_SHIPPING_LEVEL to 29"

This reverts commit cc74a76a21b7e216063305bb1f966213a78aea4e.

Reason for revert: requires gatekeeper

Change-Id: If1ce02be1f21c4263a6eafc439619fe7f3f00e51
2 files changed