virt_instance_create: drop python3 handling

We don't have any python2 using virthosts left (except one)
so lets try dropping this special handling here and just let ansible
sort out that it should use python3.

Signed-off-by: Kevin Fenzi <kevin@scrye.com>

tasks/virt_instance_create.yml

@@ -4,8 +4,6 @@
 - include_vars: dir=/srv/web/infra/ansible/vars/all/ ignore_files=README
 
 - name: get vm list
-  vars:
-    ansible_python_interpreter: "{{ hostvars[vmhost]['ansible_python']['executable'] }}"
   delegate_to: "{{ vmhost }}"
   virt: command=list_vms
   register: result