[clang-tools-extra] [clang-tidy][NFC] remove unused field in UnusedUsingDeclsCheck (PR #123451)

[Congcong Cai via cfe-commits]

https://github.com/HerrCai0907 created https://github.com/llvm/llvm-project/pull/123451

None

>From ebeac6c8a91fea794e25540d40356be313a82799 Mon Sep 17 00:00:00 2001
From: Congcong Cai <congcongcai0907 at 163.com>
Date: Sat, 18 Jan 2025 14:13:05 +0800
Subject: [PATCH] [clang-tidy][NFC] remove unused field in
 UnusedUsingDeclsCheck

---
 clang-tools-extra/clang-tidy/misc/UnusedUsingDeclsCheck.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/clang-tools-extra/clang-tidy/misc/UnusedUsingDeclsCheck.h b/clang-tools-extra/clang-tidy/misc/UnusedUsingDeclsCheck.h
index 7bdaf12e8aecee..e5f766dbac56b8 100644
--- a/clang-tools-extra/clang-tidy/misc/UnusedUsingDeclsCheck.h
+++ b/clang-tools-extra/clang-tidy/misc/UnusedUsingDeclsCheck.h
@@ -51,7 +51,6 @@ class UnusedUsingDeclsCheck : public ClangTidyCheck {
   std::vector<UsingDeclContext> Contexts;
   llvm::SmallPtrSet<const Decl *, 32> UsingTargetDeclsCache;
 
-  StringRef RawStringHeaderFileExtensions;
   FileExtensionsSet HeaderFileExtensions;
 };