Louisiana Governor Jindal makes remarks to the Conservative Political Action Conference in National Harbor, MarylandVia Stephanie Grace NEW ORLEANS (Reuters) – Louisiana lawmakers on Tuesday wondered the knowledge of eliminating the state's income tax with out raising gross sales taxes, at some point after Governor Bobby Jindal stated he would extend his plan to scrap the earnings tax. Jindal, a possible 2016 Republican presidential candidate, shelved his package deal on the two-month legislative session's opening day on Monday, acknowledging that well-liked public discomfort doomed its chances. As a substitute he referred to as on lawmakers to pass their own plan and "send me a invoice to do away with these taxes. …