[REM] mail: remove unnecessary context switch in mail send method

Commit 0d3d0e95636cf8ae0d52c650a28f505a89c3dc89 added a key in context when sending emails to know
the target model name. It was used at that time to forge for footer of
notification emails.

Since that time notification emails have evolved a lot. The code based on
that context key has been removed. Context key has been transformed into a
context switch. However it is not used anymore and can be removed. It allows
to clean a bit the code and save a context switch.

This commit is purely technical and does not hold any functional change.
Purpose is to clean code in order to prepare future changes in mail
application.

This commit allows to gain some queries in mail sending process, meaning
removing context switch is interesting. One query is gained when using
the send process. Complex performance test involving several message post
gain 3 queries each.

0 files changed, 0 insertions, 0 deletions