Revert "Follow-up 2075a46: Fix RTL image build by embedding after flipping"

This fix actually overwrites the RTL stylesheet completely.
Need a fix that embeds and RTL flips assets in one pass.

This reverts commit 7ce4a63608ba841d509f095badbe1b90eee225d5.

Change-Id: Ic8de624de95cd4159515a69a6c564176067216e2