Remove Chromium code from Tools/BuildSlaveSupport

Remove Chromium code from Tools/BuildSlaveSupport
https://bugs.webkit.org/show_bug.cgi?id=115325

Reviewed by Benjamin Poulain.

Remove the two Chromium-specific scripts and the Chromium-specific parts from the code
covering archiving test results and built products.

* BuildSlaveSupport/built-product-archive:
(archiveBuiltProduct):
(extractBuiltProduct):
* BuildSlaveSupport/chromium/output-android-device-status: Removed.
* BuildSlaveSupport/chromium/remove-crash-logs: Removed.
* BuildSlaveSupport/test-result-archive:
(archiveTestResults):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@149270 268f45cc-cd09-0410-ab3c-d52691b4dbfc