AT&T and Verizon Wireless have dropped their advertising-related lawsuits against one another. AT&T filed suit against Verizon in early November, claiming that their “map for that” ads were “misleading;” later in the month the company received a setback in the case when the judge denied an initial request from AT&T to force Verizon to pull the commercials from the airwaves. Apple later got involved in the dispute…