[TableGen] Remove unnecessary forward declaration. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239248 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/TableGen/SetTheory.h b/include/llvm/TableGen/SetTheory.h
index 595c29f2ee1d2835a28245eae5cc76d41614d3ff..903d3f3a75ef7986398c78f9e6aae7d5cffa065b 100644 (file)
--- a/include/llvm/TableGen/SetTheory.h
+++ b/include/llvm/TableGen/SetTheory.h
@@ -58,7 +58,6 @@ namespace llvm {
 class DagInit;
 class Init;
 class Record;
-class RecordKeeper;
 
 class SetTheory {
 public: