A federal judge in Texas dismissed charges Wednesday against a Hoboken man with hundreds of thousands of social media followers who was accused of participating in a “pump and dump” stock market scheme, his attorneys said. Michael Hennessey, of Hoboken, and seven others were accused of using their extensive social media presence on Twitter and Discord to hype interest in particular securities. Officials claimed they posted false and misleading information in order to “pump” the prices of those securities, while concealing their intent to later “dump” their shares by selling them at the artific…