Remove MarshalJSON on BidderName

[linux019]

The receiver on BidderName returns incorrect string (it should be quoted)

prebid-server/openrtb_ext/bidders.go

Line 230 in c49e8ea

return []byte(name), nil

As BidderName is just a redefinition of string, no need MarshalJSON on this type

func TestBidderName(t *testing.T) {
	_, err := json.Marshal(
		struct {
			Name openrtb_ext.BidderName
		}{Name: openrtb_ext.BidderMedianet})

	if err != nil {
		t.Log(err)
		t.Fail()
	}
}

=== RUN   TestBidderName
    main_test.go:78: json: error calling MarshalJSON for type openrtb_ext.BidderName: invalid character 'm' looking for beginning of value
--- FAIL: TestBidderName (0.00s)

FAIL

[hhhjort]

LGTM