Remove usless 'TODO' comment from workspace-status.sh

Change-Id: I4a436639742826819a640111f2c7a1f445ce34ea
diff --git a/tools/workspace-status.sh b/tools/workspace-status.sh
index 6670f2c..71b2eeb 100755
--- a/tools/workspace-status.sh
+++ b/tools/workspace-status.sh
@@ -13,5 +13,4 @@
 function rev() {
   git describe --always --match "v[0-9].*" --dirty
 }
-# TODO
 echo STABLE_BUILD_BATCH_LABEL $(rev)