remove old precise32

Change-Id: Id0f1cf70fb1359f1c124b34aaba28300f6e6b9b8
diff --git a/jobs.yaml b/jobs.yaml
index ee26930..eb7490c 100644
--- a/jobs.yaml
+++ b/jobs.yaml
@@ -14,6 +14,12 @@
           - project: mininet-precise32server-test, 
             condition: SUCCESS
             predefined-parameters: dir=$WORKSPACE
+    logrotate:
+        daysToKeep: 3
+        numToKeep: 3
+        artifactDaysToKeep: -1
+        artifactNumToKeep: -1
+
 - job:
     name: mininet-precise32server-test
     description: |