[compiler-rt] Remove incorrect folder layout for scudo.

Summary:
This code got landed and it's a mistake.
I suspect an incorrect patch was uploaded/applied.

The folders seems to be created here:
  https://reviews.llvm.org/D23018

Reviewers: rnk

Subscribers: llvm-commits, chrisha, kcc

Differential Revision: https://reviews.llvm.org/D23109

llvm-svn: 277579