[clang] [NFC] [Clang] Remove unused include <tuple> in Lexer.cpp (PR #173801)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Thibault Monnier (Thibault-Monnier)

<details>
<summary>Changes</summary>

This header was not being used, as found by `Ctrl + F`-ing all the declarations from `tuple` (found at https://en.cppreference.com/w/cpp/header/tuple.html).

---
Full diff: https://github.com/llvm/llvm-project/pull/173801.diff


1 Files Affected:

- (modified) clang/lib/Lex/Lexer.cpp (-1) 


``````````diff
diff --git a/clang/lib/Lex/Lexer.cpp b/clang/lib/Lex/Lexer.cpp
index b282a600c0e56..afebef0974016 100644
--- a/clang/lib/Lex/Lexer.cpp
+++ b/clang/lib/Lex/Lexer.cpp
@@ -44,7 +44,6 @@
 #include <limits>
 #include <optional>
 #include <string>
-#include <tuple>
 
 #ifdef __SSE4_2__
 #include <nmmintrin.h>

``````````

</details>


https://github.com/llvm/llvm-project/pull/173801