AMR Corp.’s shares will be removed from the New York Stock Exchange, a month after it filed for bankruptcy, according to NYSE Euronext. The stock has retreated 68 percent to 52 cents since Fort Worth, Texas-based AMR filed for Chapter 11 in November, with an average of 73.7 million shares changing hands each day. NYSE Euronext said last month that it would suspend AMR should it receive evidence the share price will be “abnormally low’’ or that the securities are “without value.’’ AMR will be removed from the world’s largest equity venue by value of companies listed before trading begins on Jan. 5