Valgrind Mac: Remove exclusions for PrintPreviewUITests that no longer exist.

BUG=none
TEST=none
Review URL: http://codereview.chromium.org/8598001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@110616 0039d316-1c4b-4281-b951-d872f2087c98

tools/valgrind/gtest_exclude/ui_tests.gtest_mac.txt

@@ -151,7 +151,6 @@ PPAPITest.URLUtil
 PPAPITest.VarDeprecated
 PPAPITest.VideoDecoder
 PreferenceServiceTest.PreservedWindowPlacementIsLoaded
-PrintPreviewUITest.LoadPrintPreviewByURL
 RedirectTest.Server
 RedirectTest.ServerReference
 RepostFormWarningTest.TestDoubleReload
@@ -172,7 +171,6 @@ WorkerFileSystemTest.FileFromFileEntrySync
 WorkerFileSystemTest.FileWriterSyncTruncateExtend
 WorkerFileSystemTest.FileWriterTruncateExtend
 WorkerFileSystemTest.Temporary
-PrintPreviewUITest.AdvancedPrintCommandEnabled
 
 # Valgrind dies on bszB assertion, see http://crbug.com/58145
 AutomatedUITestBase.Home
@@ -279,9 +277,6 @@ PPAPITest.Var
 # http://crbug.com/87766
 PPAPITest.URLLoader
 
-# http://crbug.com/87992
-PrintPreviewUITest.PrintCommandDisabled
-
 # http://crbug.com/88068
 LocaleTestsHe.TestStart