Remove unused templates.yml file

We forgot to delete this in the 0.6.0 rewrite.

Change-Id: I0ec11b2629b1399e2da4996f51068d0387957048
Reviewed-on: http://gerrit.causes.com/40979
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane.dasilva@brigade.com>