[clang] Remove unused forward declarations (NFC)

e59964b6 · Kazu Hirata · ee591a64 · e59964b6 · e59964b6
Commit e59964b6 authored Jan 23, 2022 by Kazu Hirata
--- a/clang/include/clang/AST/ASTContext.h
+++ b/clang/include/clang/AST/ASTContext.h
@@ -99,7 +99,6 @@ class CXXMethodDecl;
 class CXXRecordDecl;
 class DiagnosticsEngine;
 class ParentMapContext;
-class DynTypedNode;
 class DynTypedNodeList;
 class Expr;
 enum class FloatModeKind;

--- a/clang/include/clang/Tooling/ASTDiff/ASTDiffInternal.h
+++ b/clang/include/clang/Tooling/ASTDiff/ASTDiffInternal.h
@@ -17,9 +17,6 @@ namespace diff {

 using DynTypedNode = DynTypedNode;

-class SyntaxTree;
-struct ComparisonOptions;
-
 /// Within a tree, this identifies a node by its preorder offset.
 struct NodeId {
 private: