Disable local uploads on Malay Wiktionary

Apparently local uploads are already prohibited
by the community, so let's have this technical
change follow existing social agreement.

See bug for URL with community request to disable
local uploads on that wiki.

Bug: 67152
Change-Id: I711e10398408ef1ceb76183f1a562e2d13bda103
Merge "Disable local uploads on Malay Wiktionary"