support: Disable adding discount for fixed price plans.
support: Disable adding discount for fixed price plans.

Discount is applied relative to the price per license of our normal
plans. For fixed price plans, the concept of discount doesn't make
any sense since we manually assign a price for the entire realm
irrespective of the number of users in the realm.

punchagan/zulip,punchagan/zulip,eeshangarg/zulip,eeshangarg/zulip,rht/zulip,andersk/zulip,punchagan/zulip,rht/zulip,rht/zulip,eeshangarg/zulip,andersk/zulip,hackerkid/zulip,hackerkid/zulip,punchagan/zulip,zulip/zulip,kou/zulip,punchagan/zulip,kou/zulip,hackerkid/zulip,zulip/zulip,eeshangarg/zulip,kou/zulip,rht/zulip,kou/zulip,eeshangarg/zulip,punchagan/zulip,andersk/zulip,zulip/zulip,kou/zulip,rht/zulip,kou/zulip,zulip/zulip,andersk/zulip,hackerkid/zulip,rht/zulip,eeshangarg/zulip,punchagan/zulip,zulip/zulip,hackerkid/zulip,kou/zulip,hackerkid/zulip,zulip/zulip,eeshangarg/zulip,andersk/zulip,rht/zulip,andersk/zulip,zulip/zulip,andersk/zulip,hackerkid/zulip