Remove all default master instruments

[gyunhak]

Hi

I'm using DLL interface to pass tick data to NT
But, when there are many master symbols. NT's cpu usage reaches 25%(use all 1 core, i have 4 core machine)
I found that the similarity of master symbols's name make this problem.
I add many master instrument whose name begin with alphabet "C", and pass only one symbol's tick data by dll, then it becomes very busy.
So I want to remove all default master symbols.
Adding master symbols is very easy, but the only way I know is to remove them one by one.
Is there any way to remove all default symbols progammatically?

[NinjaTrader_RyanM1]

Hello gyunhak,

Unfortunately there's no supported technique for batch deleting or through using NinjaScript to manage the database. We currently have this on our feedback list - more control over the instrument manager. This suggestion is tracked with ID # 128. Thank you for the feedback.