[Serialization] Remove unused includes (NFC) (#142300)

These are identified by misc-include-cleaner.  I've filtered out those
that break builds.  Also, I'm staying away from llvm-config.h,
config.h, and Compiler.h, which likely cause platform- or
compiler-specific build failures.

Author: kazutakahirata

clang/lib/Serialization/ASTCommon.cpp

@@ -15,10 +15,7 @@
 #include "clang/AST/DeclObjC.h"
 #include "clang/Basic/IdentifierTable.h"
 #include "clang/Serialization/ASTDeserializationListener.h"
-#include "clang/Serialization/ModuleFile.h"
 #include "llvm/Support/DJB.h"
-#include "llvm/Support/FileSystem.h"
-#include "llvm/Support/raw_ostream.h"
 
 using namespace clang;
 

clang/lib/Serialization/ASTReader.cpp

@@ -47,7 +47,6 @@
 #include "clang/Basic/DiagnosticIDs.h"
 #include "clang/Basic/DiagnosticOptions.h"
 #include "clang/Basic/DiagnosticSema.h"
-#include "clang/Basic/ExceptionSpecificationType.h"
 #include "clang/Basic/FileManager.h"
 #include "clang/Basic/FileSystemOptions.h"
 #include "clang/Basic/IdentifierTable.h"
@@ -64,7 +63,6 @@
 #include "clang/Basic/SourceManager.h"
 #include "clang/Basic/SourceManagerInternals.h"
 #include "clang/Basic/Specifiers.h"
-#include "clang/Basic/Stack.h"
 #include "clang/Basic/TargetInfo.h"
 #include "clang/Basic/TargetOptions.h"
 #include "clang/Basic/TokenKinds.h"
@@ -97,32 +95,26 @@
 #include "clang/Serialization/SerializationDiagnostic.h"
 #include "llvm/ADT/APFloat.h"
 #include "llvm/ADT/APInt.h"
-#include "llvm/ADT/APSInt.h"
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/FloatingPointMode.h"
 #include "llvm/ADT/FoldingSet.h"
-#include "llvm/ADT/Hashing.h"
 #include "llvm/ADT/IntrusiveRefCntPtr.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/ScopeExit.h"
 #include "llvm/ADT/Sequence.h"
 #include "llvm/ADT/SmallPtrSet.h"
-#include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/iterator_range.h"
 #include "llvm/Bitstream/BitstreamReader.h"
-#include "llvm/Support/Casting.h"
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/Compression.h"
 #include "llvm/Support/DJB.h"
 #include "llvm/Support/Endian.h"
 #include "llvm/Support/Error.h"
 #include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/FileSystem.h"
 #include "llvm/Support/LEB128.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/Path.h"

clang/lib/Serialization/ASTReaderDecl.cpp

@@ -49,20 +49,17 @@
 #include "clang/Basic/PragmaKinds.h"
 #include "clang/Basic/SourceLocation.h"
 #include "clang/Basic/Specifiers.h"
-#include "clang/Basic/Stack.h"
 #include "clang/Sema/IdentifierResolver.h"
 #include "clang/Serialization/ASTBitCodes.h"
 #include "clang/Serialization/ASTRecordReader.h"
 #include "clang/Serialization/ContinuousRangeMap.h"
 #include "clang/Serialization/ModuleFile.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/FoldingSet.h"
-#include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/iterator_range.h"
 #include "llvm/Bitstream/BitstreamReader.h"
-#include "llvm/Support/Casting.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/SaveAndRestore.h"
 #include <algorithm>

clang/lib/Serialization/ASTReaderStmt.cpp

@@ -41,23 +41,18 @@
 #include "clang/Basic/CapturedStmt.h"
 #include "clang/Basic/ExpressionTraits.h"
 #include "clang/Basic/LLVM.h"
-#include "clang/Basic/Lambda.h"
 #include "clang/Basic/LangOptions.h"
 #include "clang/Basic/OpenMPKinds.h"
-#include "clang/Basic/OperatorKinds.h"
 #include "clang/Basic/SourceLocation.h"
 #include "clang/Basic/Specifiers.h"
 #include "clang/Basic/TypeTraits.h"
 #include "clang/Lex/Token.h"
 #include "clang/Serialization/ASTBitCodes.h"
 #include "clang/Serialization/ASTRecordReader.h"
-#include "llvm/ADT/BitmaskEnum.h"
 #include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Bitstream/BitstreamReader.h"
-#include "llvm/Support/Casting.h"
 #include "llvm/Support/ErrorHandling.h"
 #include <algorithm>
 #include <cassert>

clang/lib/Serialization/ASTWriter.cpp

@@ -81,27 +81,21 @@
 #include "clang/Serialization/SerializationDiagnostic.h"
 #include "llvm/ADT/APFloat.h"
 #include "llvm/ADT/APInt.h"
-#include "llvm/ADT/APSInt.h"
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/DenseSet.h"
-#include "llvm/ADT/Hashing.h"
 #include "llvm/ADT/PointerIntPair.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/ScopeExit.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/SmallVector.h"
-#include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Bitstream/BitCodes.h"
 #include "llvm/Bitstream/BitstreamWriter.h"
-#include "llvm/Support/Casting.h"
 #include "llvm/Support/Compression.h"
 #include "llvm/Support/DJB.h"
-#include "llvm/Support/Endian.h"
 #include "llvm/Support/EndianStream.h"
-#include "llvm/Support/Error.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/LEB128.h"
 #include "llvm/Support/MemoryBuffer.h"

clang/lib/Serialization/ASTWriterStmt.cpp

@@ -18,7 +18,6 @@
 #include "clang/AST/DeclTemplate.h"
 #include "clang/AST/ExprOpenMP.h"
 #include "clang/AST/StmtVisitor.h"
-#include "clang/Lex/Token.h"
 #include "clang/Serialization/ASTReader.h"
 #include "clang/Serialization/ASTRecordWriter.h"
 #include "llvm/Bitstream/BitstreamWriter.h"

clang/lib/Serialization/ModuleManager.cpp

@@ -27,13 +27,11 @@
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/iterator.h"
-#include "llvm/Support/Chrono.h"
 #include "llvm/Support/DOTGraphTraits.h"
 #include "llvm/Support/ErrorOr.h"
 #include "llvm/Support/GraphWriter.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/VirtualFileSystem.h"
-#include <algorithm>
 #include <cassert>
 #include <memory>
 #include <string>