Revert "include backtrace folder in rust-src component"
Revert "include backtrace folder in rust-src component"

This reverts commit d7a36d8964c927863faef5d3b42da08f37e5896c.

graydon/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,graydon/rust,aidancully/rust,aidancully/rust