revert: "fix($http): ignore xhr.responseType setter exception if value is "json""
revert: "fix($http): ignore xhr.responseType setter exception if value is "json""

This reverts commit dd8898605301a31887887fc8295c1629d3ffb1b0.

ggershoni/angular.js,ggershoni/angular.js,ggershoni/angular.js,ggershoni/angular.js