Revert "Update ImageGenerator to match the latest font names."

Revert "Rename font file with PostScript based names"

Revert submission 1606485-rename_fonts

Reason for revert: font file name requirement was removed.

Reverted Changes:
Iab8b9d65a:Update ImageGenerator to match the latest font nam...
Ifbe99d68c:Rename the font file with PostScript name based fi...
I307c21531:Rename font file with PostScript based names

Change-Id: Ic8174b4a4a736d9079dee4106bdfa5c440f877bb
Merged-In: I4499dafa3bb3bfcbb8a97dcfd5b4593db467fbd3