Revert of DevTools: even more logging for jump-to-previous-editing-location.html test (https://codereview.chromium.org/298723005/)

Reason for revert:
Looks like test is not accidentally failing any more during last week. Reverting this debugging patch

Original issue's description:
> DevTools: even more logging for jump-to-previous-editing-location.html test
> 
> Follow-up to r174282 to add some more logging into the test to figure out
> why the test fails from time to time. The core problem seems to be due to
> inconsistency in SimpleHistoryManager.
> The patch be reverted after the reason will be determined.
> 
> BUG=361588
> TBR=vsevik
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=174502

TBR=
NOTREECHECKS=true
NOTRY=true
BUG=361588

Review URL: https://codereview.chromium.org/304303004

git-svn-id: svn://svn.chromium.org/blink/trunk@175113 bbb929c8-8fbe-4397-9dbb-9b2b20218538