SAN FRANCISCO — An embattled Northern California district attorney has dropped his suit against the California State Bar, saying he’s postponing litigating over what he calls a vengeful campaign by his political rivals and bar officials to remove him from office.

In an emailed statement Thursday, Del Norte County DA Jon Alexander said attorneys for the State Bar had cited a 1977 case, Jacobs v. State Bar of California, in which the California Supreme Court found that county courts have no jurisdiction over pending bar disciplinary proceedings.