Bug 12980: GetHistory does useless processing

Bug 12980: GetHistory does useless processing

GetHistory iterated on the orders to calculate the quantity and price.
These values are never used by the called.
It can be removed.

Test plan:
Verify there is no regression on acqui/histsearch.pl and
catalogue/detail.pl
Actually you just have to check that the total quantity and price are
not displayed on these views.

QA: note that 'count' and 'toggle' are never used in the template.

Signed-off-by: Paola Rossi <paola.rossi@cineca.it>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>