Remove stderr from yum history command. Closes #118.

roles/date/tasks/main.yml

@@ -33,7 +33,7 @@
   when: 'internal_have_tune2fs'
 
 - name: gather date.yum_history fact
-  raw: yum history | tail -n 4 | grep -o '[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}'
+  raw: yum history 2>/dev/null  | tail -n 2 | grep -o '[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}'
   register: internal_date_yum_history_cmd
   become: yes
   ignore_errors: yes