In e9dc5edf7fafeb677bc3d720c6e2c3dfc8f3460e a custom error template
was added to correct the response returned by get_endpoint_attributes
for a non-existent endpoint.
However, after some more inspection, it was found that a valid
template already existed in moto/sns/responses.py.
This commit removes the template introduced in e9dc5ed and takes
into use the existing template.
It is a marginal improvement, but helps keeping a cleaner code
base
Co-authored-by: Antillon, Alejandro <alejandro.antillon@f-secure.com>
d382731a14