Remove DEBUG macro.

Now that the LLVM_DEBUG() macro landed on the various sub-projects
the DEBUG macro can be removed.
Also change the new uses of DEBUG to LLVM_DEBUG.

Differential Revision: https://reviews.llvm.org/D46952



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@333091 91177308-0d34-0410-b5e6-96231b3b80d8
7 files changed