[libc++] Remove duplicated _LIBCPP_HIDE_FROM_ABI from a few declarations (#122323)

Author: 2LoS

libcxx/include/__cxx03/__functional/function.h

@@ -853,7 +853,7 @@ class _LIBCPP_TEMPLATE_VIS function<_Rp(_ArgTypes...)>
 
   // construct/copy/destroy:
   _LIBCPP_HIDE_FROM_ABI function() _NOEXCEPT {}
-  _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDE_FROM_ABI function(nullptr_t) _NOEXCEPT {}
+  _LIBCPP_HIDE_FROM_ABI function(nullptr_t) _NOEXCEPT {}
   _LIBCPP_HIDE_FROM_ABI function(const function&);
   _LIBCPP_HIDE_FROM_ABI function(function&&) _NOEXCEPT;
   template <class _Fp, class = _EnableIfLValueCallable<_Fp>>

libcxx/include/__cxx03/future

@@ -1472,7 +1472,7 @@ public:
 
   _LIBCPP_HIDE_FROM_ABI void swap(__packaged_task_function&) _NOEXCEPT;
 
-  _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDE_FROM_ABI _Rp operator()(_ArgTypes...) const;
+  _LIBCPP_HIDE_FROM_ABI _Rp operator()(_ArgTypes...) const;
 };
 
 template <class _Rp, class... _ArgTypes>

libcxx/include/__cxx03/regex

@@ -5544,9 +5544,7 @@ public:
 
   _LIBCPP_HIDE_FROM_ABI bool operator==(const regex_token_iterator& __x) const;
 #if _LIBCPP_STD_VER >= 20
-  _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDE_FROM_ABI bool operator==(default_sentinel_t) const {
-    return *this == regex_token_iterator();
-  }
+  _LIBCPP_HIDE_FROM_ABI bool operator==(default_sentinel_t) const { return *this == regex_token_iterator(); }
 #endif
 #if _LIBCPP_STD_VER < 20
   _LIBCPP_HIDE_FROM_ABI bool operator!=(const regex_token_iterator& __x) const { return !(*this == __x); }

libcxx/include/__functional/function.h

@@ -854,7 +854,7 @@ class _LIBCPP_TEMPLATE_VIS function<_Rp(_ArgTypes...)>
 
   // construct/copy/destroy:
   _LIBCPP_HIDE_FROM_ABI function() _NOEXCEPT {}
-  _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDE_FROM_ABI function(nullptr_t) _NOEXCEPT {}
+  _LIBCPP_HIDE_FROM_ABI function(nullptr_t) _NOEXCEPT {}
   _LIBCPP_HIDE_FROM_ABI function(const function&);
   _LIBCPP_HIDE_FROM_ABI function(function&&) _NOEXCEPT;
   template <class _Fp, class = _EnableIfLValueCallable<_Fp>>

libcxx/include/future

@@ -1492,7 +1492,7 @@ public:
 
   _LIBCPP_HIDE_FROM_ABI void swap(__packaged_task_function&) _NOEXCEPT;
 
-  _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDE_FROM_ABI _Rp operator()(_ArgTypes...) const;
+  _LIBCPP_HIDE_FROM_ABI _Rp operator()(_ArgTypes...) const;
 };
 
 template <class _Rp, class... _ArgTypes>

libcxx/include/regex

@@ -5548,9 +5548,7 @@ public:
 
   _LIBCPP_HIDE_FROM_ABI bool operator==(const regex_token_iterator& __x) const;
 #  if _LIBCPP_STD_VER >= 20
-  _LIBCPP_HIDE_FROM_ABI _LIBCPP_HIDE_FROM_ABI bool operator==(default_sentinel_t) const {
-    return *this == regex_token_iterator();
-  }
+  _LIBCPP_HIDE_FROM_ABI bool operator==(default_sentinel_t) const { return *this == regex_token_iterator(); }
 #  endif
 #  if _LIBCPP_STD_VER < 20
   _LIBCPP_HIDE_FROM_ABI bool operator!=(const regex_token_iterator& __x) const { return !(*this == __x); }