[llvm] [CMake] Remove some always-true HAVE_XXX_H (PR #123087)

[via llvm-commits]

github-actions[bot] wrote:

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git-clang-format --diff 091adb8807decb4fa1b4e58eba141a06058eb804 ffbc2f687f84d417f3210d4e7d500fd8a6d6e71d --extensions inc,h,cpp -- llvm/include/llvm/Support/FileSystem.h llvm/lib/Analysis/ConstantFolding.cpp llvm/lib/ExecutionEngine/RuntimeDyld/RTDyldMemoryManager.cpp llvm/lib/Support/Errno.cpp llvm/lib/Support/Unix/Path.inc llvm/lib/Support/Unix/Process.inc llvm/lib/Support/Unix/Program.inc llvm/lib/Support/Unix/Signals.inc utils/bazel/llvm-project-overlay/llvm/include/llvm/Config/config.h
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Support/Errno.cpp b/llvm/lib/Support/Errno.cpp
index 0ef8d1ef1c..174deea459 100644
--- a/llvm/lib/Support/Errno.cpp
+++ b/llvm/lib/Support/Errno.cpp
@@ -23,9 +23,7 @@
 namespace llvm {
 namespace sys {
 
-std::string StrError() {
-  return StrError(errno);
-}
+std::string StrError() { return StrError(errno); }
 
 std::string StrError(int errnum) {
   std::string str;

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https://github.com/llvm/llvm-project/pull/123087