[AVR] Remove the instrumentation pass

I have a much better way of running integration tests now.

https://github.com/dylanmckay/avr-test-suite

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@308857 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed