Remove TextSectionSym as it is unused.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198393 91177308-0d34-0410-b5e6-96231b3b80d8
80-column.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198394 91177308-0d34-0410-b5e6-96231b3b80d8