[llvm] [TableGen] [NFC] Remove Unused Imports in TableGen BE (PR #113725)

[Rahul Joshi via llvm-commits]

================
@@ -17,7 +17,6 @@
 #include "llvm/TableGen/Error.h"
 #include "llvm/TableGen/Record.h"
 #include "llvm/TableGen/TableGenBackend.h"
-#include <algorithm>
 #include <vector>
----------------
jurahul wrote:

Can we add <tuple> as it seems the file uses std::tuple?

https://github.com/llvm/llvm-project/pull/113725