Delete some code that is no longer needed

tools/clang/scripts/update.sh

Index: tools/clang/scripts/update.sh
diff --git a/tools/clang/scripts/update.sh b/tools/clang/scripts/update.sh
index a41809b04123a3b10eae9b6e6e34ef39348a4521..1564755a17d81a329da839f5ba21c4b062b66fec 100755
--- a/tools/clang/scripts/update.sh
+++ b/tools/clang/scripts/update.sh
@@ -54,12 +54,6 @@ if [[ -n "$mac_only" ]] && [[ "${OS}" != "Darwin" ]]; then
   exit 0
 fi
 
-# TODO(thakis): Remove this after Sept 29 2011. http://crbug.com/96722
-for rev in 138188 138417 139029 139473 139990; do
-  rm -f clang-$rev.tgz
-  rm -rf clang-$rev
-done
-
 # Xcode and clang don't get along when predictive compilation is enabled.
 # http://crbug.com/96315
 if [[ "${OS}" = "Darwin" ]] && xcodebuild -version | grep -q 'Xcode 3.2' ; then