Remove remaining usages of contact & domain values in participant templates

[eileenmcnaughton]

Overview

This removes the last instances of the (uncommon) pattern when $domain and $contact are used in the templates rather than the tokens

Before

Participant templates use $domain & $contact

After

Relevant tokens used - hookTokens is now obsolete - although removing this call to it will be in a follow up

Technical Details

@demeritcowboy @seamuslee001 these are the last 2 templates with this pattern. I feel like we've worked through it carefully enough that this simple PR makes sense next. However, if this is merged I will do (yet another) regen + some clean up around variables etc & maybe look at some of those participant & event tokens.

Comments

[civibot]

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[seamuslee001]

Jenkins re test this please

[seamuslee001]

Looks fine to me MOP