Use ansible default for remote_tmp

Change-Id: Idf7a2f87529dd4636c7a36de4088dc6e887221d9
diff --git a/ansible.cfg b/ansible.cfg
index 4698e7c..8531f9b 100644
--- a/ansible.cfg
+++ b/ansible.cfg
@@ -8,7 +8,6 @@
 
 ; don't use cowsay
 nocows = True
-remote_tmp=/tmp/.ansible/tmp
 
 # change syntax of ansible_managed to be less verbose
 ansible_managed = Ansible managed - modified by {uid} on %Y-%m-%d %H:%M:%S