[LTO] Remove unused includes (NFC)

[kazutakahirata]

clangd reports these as unused headers. My manual inspection agrees
with the findings.

[llvmbot]

@llvm/pr-subscribers-llvm-transforms

@llvm/pr-subscribers-lto

Author: Kazu Hirata (kazutakahirata)

Changes

clangd reports these as unused headers. My manual inspection agrees
with the findings.

---

Full diff: https://github.com/llvm/llvm-project/pull/108110.diff

4 Files Affected:

• (modified) llvm/include/llvm/LTO/LTO.h (-1)
• (modified) llvm/include/llvm/Transforms/IPO/FunctionImport.h (-2)
• (modified) llvm/lib/LTO/LTO.cpp (-1)
• (modified) llvm/lib/Transforms/IPO/FunctionImport.cpp (-1)

diff --git a/llvm/include/llvm/LTO/LTO.h b/llvm/include/llvm/LTO/LTO.h
index fc6e93606de122..214aa4e1c562dc 100644
--- a/llvm/include/llvm/LTO/LTO.h
+++ b/llvm/include/llvm/LTO/LTO.h
@@ -19,7 +19,6 @@
 
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/MapVector.h"
-#include "llvm/ADT/StringMap.h"
 #include "llvm/Bitcode/BitcodeReader.h"
 #include "llvm/IR/ModuleSummaryIndex.h"
 #include "llvm/LTO/Config.h"
diff --git a/llvm/include/llvm/Transforms/IPO/FunctionImport.h b/llvm/include/llvm/Transforms/IPO/FunctionImport.h
index 0a6cc5951b706a..70739709a810ab 100644
--- a/llvm/include/llvm/Transforms/IPO/FunctionImport.h
+++ b/llvm/include/llvm/Transforms/IPO/FunctionImport.h
@@ -17,9 +17,7 @@
 #include "llvm/IR/PassManager.h"
 #include "llvm/Support/Error.h"
 #include <functional>
-#include <map>
 #include <memory>
-#include <string>
 #include <system_error>
 #include <utility>
 
diff --git a/llvm/lib/LTO/LTO.cpp b/llvm/lib/LTO/LTO.cpp
index 5d9a5cbd18f156..a88124dacfaefd 100644
--- a/llvm/lib/LTO/LTO.cpp
+++ b/llvm/lib/LTO/LTO.cpp
@@ -38,7 +38,6 @@
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Error.h"
 #include "llvm/Support/FileSystem.h"
-#include "llvm/Support/ManagedStatic.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/Path.h"
 #include "llvm/Support/SHA1.h"
diff --git a/llvm/lib/Transforms/IPO/FunctionImport.cpp b/llvm/lib/Transforms/IPO/FunctionImport.cpp
index 1aac8e07135875..ff0d78178bd188 100644
--- a/llvm/lib/Transforms/IPO/FunctionImport.cpp
+++ b/llvm/lib/Transforms/IPO/FunctionImport.cpp
@@ -46,7 +46,6 @@
 #include "llvm/Transforms/Utils/ValueMapper.h"
 #include <cassert>
 #include <memory>
-#include <set>
 #include <string>
 #include <system_error>
 #include <tuple>