Remove unused locale data for recovery

AOSP wants to show localized menus for rescue party and
format data. To achieve that, they produce at compile time a big
PNG file with rows of localized text. The runtime would then pick
the correct row to draw.

In order to customize our recovery UI we cannot draw pregenerated
text. Avoid generating these files to shrink recovery size.
(Saving 2.3MB on xxhdpi!)

Change-Id: Id38d239254f17eeed5491621865c747a8496ed83