As of this summer semester the usual regulations regarding withdrawal from exams apply again, i.e. the 3-day-rule in most places. For more detailed information on what applies to you, it is best to check with your respective examination regulations.
The rule from the Corona Statutes for withdrawals via non-attendance that applies to exams from the semesters of SoSe20 – WiSe21/22 is thus not extended to this semester.