Removed DEBUG_TYPE from TokenAnalyzer.h

Summary:
Defining DEBUG_TYPE in a header file doesn't make sense.
It is already defined in the corresponding source file.

Reviewers: klimek, ioeric

Subscribers: klimek

Differential Revision: https://reviews.llvm.org/D27164

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@288125 91177308-0d34-0410-b5e6-96231b3b80d8