Revert "Fix //testing import lint issues"

This reverts commit a418670f47e2a8bb3a2ce69e990203eb69b5225f.

Reason for revert: Causing ModuleNotFoundError: No module named 'skia_gold_common' errors on gardened builders

Original change's description:
> Fix //testing import lint issues
>
> Removes the import-related entries from //testing's pylintrc file and
> fixes resulting lint errors.
>
> Bug: 353942917
> Change-Id: Ie3b3dba795e0806631c37243a3b4f480a4215a6e
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5737567
> Auto-Submit: Brian Sheedy <[email protected]>
> Commit-Queue: Brian Sheedy <[email protected]>
> Reviewed-by: Ben Pastene <[email protected]>
> Cr-Commit-Position: refs/heads/main@{#1337485}

Bug: 353942917
Change-Id: Ic27cddfc5fda700b5898c3681af18f42fd1222fa
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5763726
Commit-Queue: Noah Rose Ledesma <[email protected]>
Bot-Commit: Rubber Stamper <[email protected]>
Owners-Override: Noah Rose Ledesma <[email protected]>
Reviewed-by: Brian Sheedy <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1337552}
NOKEYCHECK=True
GitOrigin-RevId: 3b0c4b7ccab92c0309798098f331734f023bc577
10 files changed