Revert "Use ccache for linux default builds."

This reverts commit 9f3eef796f631977c08fb1771f6507e0a8e55d99.

Reason for revert: breaking https://chromium-swarm.appspot.com/tasklist?f=sk_name%3AHousekeeper-PerCommit-CheckGeneratedFiles

Original change's description:
> Use ccache for linux default builds.
> 
> Change-Id: I6bd2439c59f165d56f093185aba818d186b62761
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/268903
> Commit-Queue: Weston Tracey <westont@google.com>
> Reviewed-by: Ben Wagner aka dogben <benjaminwagner@google.com>

TBR=benjaminwagner@google.com,westont@google.com

Change-Id: I3c5a8f456d03c880a24294e61ae116bd5a1e3db8
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/269481
Reviewed-by: Leon Scroggins <scroggo@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
21 files changed