Bug 31292: Untranslatable string in sample_notices.yaml

Bug 31292: Untranslatable string in sample_notices.yaml

This patch removes a regex that discard lines in multiline YAML values
On close inspection, there is no need for it.

To test:
1) go to misc translator, update some language
    ./translate update fr-CA

2) check missing string

    egrep "You may pick up your article" po/fr-CA-installer.po

   from sample_notices.yaml

3) apply the patch, repeat 1)

4) repeat 2), verify the string is present in the translation file

5) translate the new string, install the language,
   verify string is present in the translated file
    ./translate install fr-CA

   check fr-CA/mandatory/sample_notices.yml

There are three new strings
msgid "%sDear %s %s,%s"
msgid "%s%s%sTitle: %s"
msgid "%sYou may pick up your article at %s.%sYou can download the scanned materials via the following url(s): %s.%s"

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>