SymbolizableObjectFile.h - remove unnecessary includes. NFCI.

Use forward declarations where possible, move includes down to SymbolizableObjectFile.cpp and avoid duplicate includes.

llvm/lib/DebugInfo/Symbolize/SymbolizableObjectFile.cpp

@@ -12,24 +12,15 @@
 
 #include "SymbolizableObjectFile.h"
 #include "llvm/ADT/STLExtras.h"
-#include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/Triple.h"
 #include "llvm/BinaryFormat/COFF.h"
 #include "llvm/DebugInfo/DWARF/DWARFContext.h"
-#include "llvm/DebugInfo/Symbolize/SymbolizableModule.h"
 #include "llvm/Object/COFF.h"
 #include "llvm/Object/ObjectFile.h"
 #include "llvm/Object/SymbolSize.h"
 #include "llvm/Support/Casting.h"
 #include "llvm/Support/DataExtractor.h"
-#include "llvm/Support/Error.h"
 #include <algorithm>
-#include <cstdint>
-#include <memory>
-#include <string>
-#include <system_error>
-#include <utility>
-#include <vector>
 
 using namespace llvm;
 using namespace object;

llvm/lib/DebugInfo/Symbolize/SymbolizableObjectFile.h

@@ -15,12 +15,12 @@
 #include "llvm/ADT/StringRef.h"
 #include "llvm/DebugInfo/DIContext.h"
 #include "llvm/DebugInfo/Symbolize/SymbolizableModule.h"
-#include "llvm/Support/ErrorOr.h"
+#include "llvm/Support/Error.h"
 #include <cstdint>
-#include <map>
 #include <memory>
 #include <string>
-#include <system_error>
+#include <utility>
+#include <vector>
 
 namespace llvm {