How to remove a variable from a scenario?

[behnam-zakeri]

message_ix.Scenario has methods for removing sets and parameters, remove_set() and remove_par(), respectively. However, there seems not to have such a method for removing a variable (e.g., remove_var()). This makes it almost impossible to remove an extra variable, which may was added by mistake, or more importantly to change the index sets of a variable by removing and initializing that variable again. Is there any intention for not having this feature, or am I missing something out?

[khaeru]

I will transfer this to ixmp, as it concerns features that aren't located in message_ix per se.