So this is a slightly more complex answer to give.
The simple answer is yes. Hypnosis can be used to neutralize and replace gender dysphoria or to help a client become more comfortable with their given or chosen gender.
It is difficult to imagine a client coming in to ask for such a service; however once asked for the work can be done. The client can be reprogrammed to act and think like any gender by picking appropriate models. The dysphoria can be treated as an amalgamation of traumatic experiences with ISE and SSE which can each be resolved using hypnosis and NLP techniques.
This is highly dependent on your client’s request. And may be more difficult for some than others as sometimes clients ask for results that they are already opposing.
In my practice I had the case of a homosexual who was in a heterosexual marriage and had experienced erectile dysfunction. Of course when he came in he asked to “fix” the homosexuality; however a short therapeutic conversation lead to a similar alternate goal of being able to consummate the marriage.