Revert "pngquant: Skip if Larger"

This reverts commit 7f6c7ad84c66b7fcd218e173972e4f99030dc7e4.

This option is bad because it appears that it skips anything unless change is greater than 1 kb less on the png.  Seeing as some of these pngs aren't even 1 kb this commit is bad.

Sorry to those that noticed an increase of 3 or 4 MB in their ROMs....

Change-Id: I313efb3ccd52e26b3a7e0951579e23228363417d