Drop 'chrome_browser_tests without IRT' step from buildbots
Drop 'chrome_browser_tests without IRT' step from buildbots

Running in the browser without the IRT is not supported.  We only have it
done at all under glibc because of lingering missing support in that world,
and there this step is redundant with the main chrome_browser_tests step
since --nacl_glibc still sets irt=0.

BUG=http://code.google.com/p/nativeclient/issues/detail?id=1691
TEST=none

R=ncbray@google.com

Review URL: http://codereview.chromium.org/7395034

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@6100 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client