Babel is already taking the language into account while
formating a time delta into a readable string like '2 minutes ago'.
_format_time_ago was put in translate.py file to be able to use
the _ translate class. But it can be placed in misc like other
format function already using babel.
This fix the PR #34624
and is linked to Task ID : 2028059
Task ID: 2055847
Closes PR #35806
Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>