"dismiss from" is correct and usable in written English.
You can use it to mean "to terminate someone's employment or obligation." Example: The company dismissed him from his role as General Manager.
We at once dismiss from consideration the fact that the plaintiff in error is a black man.
Depending on the dictionary, you get a variety of definitions: To discharge from a position; to dismiss from employment; having lost your job.
Look, some things we are willing to dismiss from afar, and some things we are willing to get close to and better understand and appreciate.
The money is given not so that we can dismiss from our minds the poor or the sick or the helpless but so that we can remember them.
Our most illustrious native son, Robert M. La Follette, put it best when he said, "The recall enables the people to dismiss from public service those representatives who dishonor their commissions by betraying the public interest".
One thing that I can't yet dismiss from my waking thoughts and dawn dreams is the impish, tongue-in-cheek compulsion of the Western televisionaries to commingle the Bard and the bang-bangs.
