Remove --build-type from layout_test_wrapper.py.
Remove --build-type from layout_test_wrapper.py.

This used to be for kjs vs v8 builds. I had the masters stop passing
the flag in r101115 (2 months ago):
http://src.chromium.org/viewvc/chrome?view=rev&revision=101115

Review URL: http://codereview.chromium.org/8495037

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@109151 0039d316-1c4b-4281-b951-d872f2087c98

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