[llvm] Remove unused <algorithm> inclusion (PR #166942)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions h,cpp,inc -- llvm/benchmarks/FormatVariadicBM.cpp llvm/include/llvm/Frontend/OpenMP/ClauseT.h llvm/include/llvm/IR/DiagnosticInfo.h llvm/include/llvm/IR/Dominators.h llvm/include/llvm/IR/ProfileSummary.h llvm/include/llvm/MC/MCAssembler.h llvm/include/llvm/Support/TypeSize.h llvm/include/llvm/Support/UnicodeCharRanges.h llvm/include/llvm/TableGen/DirectiveEmitter.h llvm/include/llvm/Transforms/Vectorize/SandboxVectorizer/InstrMaps.h llvm/include/llvm/XRay/FDRRecordConsumer.h llvm/lib/CodeGen/RegAllocGreedy.h llvm/lib/Support/Unix/Unix.h llvm/lib/Support/Windows/Signals.inc llvm/lib/Target/CSKY/CSKYConstantIslandPass.cpp llvm/lib/Target/WebAssembly/WebAssemblyTargetTransformInfo.h llvm/lib/Target/X86/X86FlagsCopyLowering.cpp llvm/tools/llvm-stress/llvm-stress.cpp llvm/unittests/ADT/CombinationGeneratorTest.cpp llvm/unittests/ADT/DAGDeltaAlgorithmTest.cpp llvm/unittests/ADT/DeltaAlgorithmTest.cpp llvm/unittests/ADT/SequenceTest.cpp llvm/unittests/Analysis/DomTreeUpdaterTest.cpp llvm/unittests/TextAPI/TextStubHelpers.h llvm/utils/KillTheDoctor/KillTheDoctor.cpp --diff_from_common_commit
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``````````diff
diff --git a/llvm/benchmarks/FormatVariadicBM.cpp b/llvm/benchmarks/FormatVariadicBM.cpp
index 7c49f9658..55b286d8a 100644
--- a/llvm/benchmarks/FormatVariadicBM.cpp
+++ b/llvm/benchmarks/FormatVariadicBM.cpp
@@ -6,8 +6,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "benchmark/benchmark.h"
-#include "llvm/Support/FormatVariadic.h"
+#include "benchmark/benchmark.h"
+#include "llvm/Support/FormatVariadic.h"
 #include <string>
 #include <vector>
 

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https://github.com/llvm/llvm-project/pull/166942