Remove duplicate tests in res.location and res.jsonp

[GroophyLifefor]

Remove duplicate test cases:

• Remove duplicate "should encode data uri2" test from res.location.js (original at line 49: "should encode data uri1")
• Remove duplicate "should not override previous Content-Types" test from res.jsonp.js (original at line 130: "should not override previous Content-Types with no callback")

Review wanted to @bjohansebas

[bjohansebas]

LGTM. I’d like to give Wes a bit of time in case he has some context about the repeated res.location test, since he wrote those tests. If not, I’ll come back in a week and merge it.

Side note: please don’t tag people in the description to request reviews, we all watch the repositories.

[krzysdz]

Suggested change

	it('should encode data uri', function (done) {

If the duplicate test is removed, I think the suffix can also be removed. Suffixes have been added in c96c690.

This duplicate test seems to have been a mistake - #5561 (comment) (check reactions).