(Corrects to remove reference in paragraph 9 to FTC blocking Penguin Random House and Simon & Schuster deal) By Siddharth Cavale NEW YORK (Reuters) -Kroger Co’s acquisition of Albertsons Companies Inc could exacerbate income inequality through job losses and eroding wages at a time of high inflation, a group of the retailers’ biggest unions and antitrust experts wrote in a letter seen by Reuters on Thursday. “In many markets across the country, grocery competition would cease, likely resulting in employee layoffs and higher prices,” they wrote in a letter addressed to the Federal Trade Commiss…