Remove dependencies on exception types

Author: chris-durand

include/any

@@ -45,6 +45,7 @@ namespace std
 #include <new>
 #include <utility>
 #include <type_traits>
+#include <bits/functexcept.h>
 
 namespace std _GLIBCXX_VISIBILITY(default)
 {
@@ -55,25 +56,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
    *  @{
    */
 
-  /**
-   *  @brief Exception class thrown by a failed @c any_cast
-   *  @ingroup exceptions
-   */
-  class bad_any_cast : public bad_cast
-  {
-  public:
-    virtual const char* what() const noexcept { return "bad any_cast"; }
-  };
-
-  [[gnu::noreturn]] inline void __throw_bad_any_cast()
-  {
-#if __cpp_exceptions
-    throw bad_any_cast{};
-#else
-    __builtin_abort();
-#endif
-  }
-
 #define __cpp_lib_any 201606L
 
   /**