removed client side default quantity calculation

Current versions of candlepin send "suggested_quantity" of a pool to the client, which we display in the gui.  Older candlepin versions did not do this, so we have a similar calculation in the gui.  The gui calculation isn't necessarily correct, and does not take ram or architecture into account.  With the ability to add attributes in the rules, we cannot guarantee that the client-side calculation is ever correct.

This will default the quantity to 1 if it is not specified by the server.