Remove experimental Debug builders.

They take approx. twice as long as Release and might be adding too much load.

BUG=317931

Review URL: https://codereview.chromium.org/144643003

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/commit-queue@246231 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/projects.py b/projects.py
index 20dc5fa..49cbdee 100644
--- a/projects.py
+++ b/projects.py
@@ -461,9 +461,7 @@
             context_obj,
             percentage=0.25,
             try_job_description={
-                'linux_chromium_dbg': ['defaulttests'],
                 'linux_chromium_rel': ['defaulttests'],
-                'mac_chromium_dbg': ['defaulttests'],
                 'mac_chromium_rel': ['defaulttests'],
             }))