Partially revert "V8 Buildbot: Switch win32 testers to recipes."
Partially revert "V8 Buildbot: Switch win32 testers to recipes."

This reverts commit the master.cfg changes of r260514 as the "rmtree build" step breaks the build.

BUG=315202
TBR=kjellander@chromium.org,

Review URL: https://codereview.chromium.org/219253002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@260529 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build