Revert "apply codec origin in generator"

This reverts commit fa15877f487333bec876e7315cf584c0d598d098.

Reason for revert: pdfium fix landed

Original change's description:
> apply codec origin in generator
> 
> Bug: skia:
> Change-Id: I383dacb49b1e3c88467ccdbf3288764bb1bbf01a
> Reviewed-on: https://skia-review.googlesource.com/58600
> Reviewed-by: Leon Scroggins <scroggo@google.com>
> Commit-Queue: Mike Reed <reed@google.com>

TBR=scroggo@google.com,reed@google.com

Change-Id: I3b0e8ab22eec9aba8b9d8114e5c50e5451d8353b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/60300
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>