removing a scene from a master

HI folks:

I was fiddling with my hogPC getting ready to possibly implement it at our church. I created a scene and attached it to a master, but when i try to clear it off the master, it WONT go away - i hit delete and the choose key for the master and Nothing happens -- im really not sure whats going on -- or what i should do

please help

TIM
First Baptist Church
Medina, Ohio
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