remove unused include from header

hnrklssn · hnrklssn · commit 175df622dd94 · 2026-04-16T16:53:36.000-07:00
diff --git a/include/swift/AST/DiagnosticGroups.h b/include/swift/AST/DiagnosticGroups.h
@@ -22,7 +22,6 @@
 #include "llvm/ADT/ArrayRef.h"
 #include <array>
 #include <string_view>
-#include <unordered_map>
 
 namespace swift {
 enum class DiagnosticGroupOptions {
diff --git a/lib/AST/DiagnosticGroups.cpp b/lib/AST/DiagnosticGroups.cpp
@@ -22,6 +22,7 @@
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Support/Path.h"
 #include <optional>
+#include <unordered_map>
 #include <unordered_set>
 
 namespace swift {
