Removing time signature from end of line

[Alberto Simões]

Hi

I would like to hide the cautionary time signature change from the end 
of the staff. I found out that

 \set Staff.explicitKeySignatureVisibility = #end-of-line-invisible

works for the key, but I couldn't find the equivalent for the time 
signature.

Also, this change is from a Marcia to a Trio, and I would like to hide, 
at the beginning of the trio, the repeat bar (just like if it was a new 
piece). Is that possible?


My other alternative would be to have two separate \score, but then 
measure counter is reset when starting the Trio, and I do not want that.


Thanks for any ideas/pointers
Alberto