In that case you should not use ansible at all to manage this system.
There is a reason ansible requires python 2.6+. So even if you would somehow get this (arcane and probably insecure) python version to work on your host, there will then be problems with ansible.
If you really must, then revisit the way you added your own compiled python and make that work. Since you actually seem to have paid for this system, I would suggest contacting the vendor for help on shoehorning such an ansible supported (but unsupported from the vendors point) python version into your system.
Dick