As far as I can tell, this has been dead code ever since it was
introduced in change Ica040cd18d (commit aa10668e6d), and was never
called; the effective search URL was initially constructed via inputs to
the search form (e.g. a hidden input for wprov), and later the separate
urlGenerator.js was added. (Also, “suggestion” is not a valid
Special:Search paramater as far as I can tell.)
Also add some tests for the separate urlGenerator.js, to make up for the
other tests being removed.
This reduces the module size of skins.vector.search enough that we can
decrease the bundle size test config to 3.2 kB [KiB].
Change-Id: I6be5ba362402c2c2ec582d9a0192c80f46e7a7ce
