Bug 31039: Remove duplicate modal printing JS

Bug 31039: Remove duplicate modal printing JS

This patch removes the erroneos duplication of the modal printing js.

Test plan
1) Create some transactions and perform a cashup.
2) Open the cashup summary modal
3) Click 'Print'
4) Cancel the print dialogue
5) Note that the dialogue re-appears
6) Apply the patch
7) Repeat and note the dialogue closes first time now.

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
(cherry picked from commit 5e6f88e62fe844eab78e23945e7c06dbd65b8772)

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
(cherry picked from commit 57c375999a27e534226abd36cf4eb00ac06276bb)
Signed-off-by: Arthur Suzuki <arthur.suzuki@biblibre.com>