[llvm] Stop including string (NFC)

Identified with clangd.

llvm/include/llvm/Analysis/InlineModelFeatureMaps.h

@@ -13,7 +13,6 @@
 #include "llvm/Analysis/TensorSpec.h"
 
 #include <array>
-#include <string>
 #include <vector>
 
 namespace llvm {

llvm/include/llvm/DWARFLinkerParallel/StringPool.h

@@ -13,7 +13,6 @@
 #include "llvm/CodeGen/DwarfStringPoolEntry.h"
 #include "llvm/Support/Allocator.h"
 #include "llvm/Support/PerThreadBumpPtrAllocator.h"
-#include <string>
 #include <string_view>
 
 namespace llvm {

llvm/include/llvm/Option/Option.h

@@ -15,7 +15,6 @@
 #include "llvm/Option/OptTable.h"
 #include "llvm/Support/ErrorHandling.h"
 #include <cassert>
-#include <string>
 
 namespace llvm {
 

llvm/include/llvm/TableGen/Parser.h

@@ -14,7 +14,6 @@
 #define LLVM_TABLEGEN_PARSER_H
 
 #include "llvm/ADT/STLExtras.h"
-#include <string>
 #include <vector>
 
 namespace llvm {

llvm/lib/CodeGen/SelectOptimize.cpp

@@ -39,7 +39,6 @@
 #include <memory>
 #include <queue>
 #include <stack>
-#include <string>
 
 using namespace llvm;
 

llvm/lib/Target/AArch64/AArch64Subtarget.h

@@ -26,7 +26,6 @@
 #include "llvm/CodeGen/RegisterBankInfo.h"
 #include "llvm/CodeGen/TargetSubtargetInfo.h"
 #include "llvm/IR/DataLayout.h"
-#include <string>
 
 #define GET_SUBTARGETINFO_HEADER
 #include "AArch64GenSubtargetInfo.inc"

llvm/lib/Target/Hexagon/MCTargetDesc/HexagonMCTargetDesc.h

@@ -16,7 +16,6 @@
 #include "llvm/MC/MCRegisterInfo.h"
 #include "llvm/Support/CommandLine.h"
 #include <cstdint>
-#include <string>
 
 #define Hexagon_POINTER_SIZE 4
 

llvm/lib/Target/Mips/MipsSubtarget.h

@@ -26,7 +26,6 @@
 #include "llvm/IR/DataLayout.h"
 #include "llvm/MC/MCInstrItineraries.h"
 #include "llvm/Support/ErrorHandling.h"
-#include <string>
 
 #define GET_SUBTARGETINFO_HEADER
 #include "MipsGenSubtargetInfo.inc"

llvm/tools/llvm-cfi-verify/lib/GraphBuilder.h

@@ -38,7 +38,6 @@
 
 #include <functional>
 #include <set>
-#include <string>
 
 using Instr = llvm::cfi_verify::FileAnalysis::Instr;
 

llvm/tools/llvm-exegesis/lib/Analysis.h

@@ -24,7 +24,6 @@
 #include "llvm/Support/raw_ostream.h"
 #include <memory>
 #include <set>
-#include <string>
 
 namespace llvm {
 namespace exegesis {

llvm/tools/llvm-exegesis/lib/SnippetRepetitor.cpp

@@ -7,7 +7,6 @@
 //===----------------------------------------------------------------------===//
 
 #include <array>
-#include <string>
 
 #include "SnippetRepetitor.h"
 #include "Target.h"

llvm/tools/llvm-objcopy/llvm-objcopy.cpp

@@ -56,7 +56,6 @@
 #include <cassert>
 #include <cstdlib>
 #include <memory>
-#include <string>
 #include <system_error>
 #include <utility>
 

llvm/tools/llvm-pdbutil/DumpOutputStyle.h

@@ -17,8 +17,6 @@
 #include "llvm/DebugInfo/PDB/Native/LinePrinter.h"
 #include "llvm/DebugInfo/PDB/Native/RawConstants.h"
 
-#include <string>
-
 namespace llvm {
 namespace object {
 class COFFObjectFile;

llvm/tools/llvm-pdbutil/ExplainOutputStyle.h

@@ -13,8 +13,6 @@
 
 #include "llvm/DebugInfo/PDB/Native/LinePrinter.h"
 
-#include <string>
-
 namespace llvm {
 
 namespace pdb {

llvm/tools/llvm-rc/ResourceScriptToken.h

@@ -29,7 +29,6 @@
 
 #include <cstdint>
 #include <map>
-#include <string>
 #include <vector>
 
 namespace llvm {

llvm/tools/llvm-readobj/llvm-readobj.h

@@ -16,7 +16,6 @@
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/Error.h"
 #include "llvm/Support/ErrorOr.h"
-#include <string>
 
 namespace llvm {
   namespace object {

llvm/unittests/Support/AddressRangeTest.cpp

@@ -11,7 +11,6 @@
 
 #include "gmock/gmock.h"
 #include "gtest/gtest.h"
-#include <string>
 
 using namespace llvm;