[libc++] Mark bad_any_cast tests as unsupported when the dylib doesn't support bad_any_cast

With the latest compiler fix to availability, some availability failures
that didn't trigger before now trigger.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@356678 91177308-0d34-0410-b5e6-96231b3b80d8

test/std/utilities/any/any.nonmembers/any.cast/any_cast_request_invalid_value_category.fail.cpp

@@ -7,6 +7,7 @@
 //===----------------------------------------------------------------------===//
 
 // UNSUPPORTED: c++98, c++03, c++11, c++14
+// UNSUPPORTED: dylib-has-no-bad_any_cast
 
 // <any>
 
@@ -21,10 +22,6 @@ struct TestType {};
 using std::any;
 using std::any_cast;
 
-// On platforms that do not support any_cast, an additional availability error
-// is triggered by these tests.
-// expected-error@any_cast_request_invalid_value_category.fail.cpp:* 0+ {{call to unavailable function 'any_cast': introduced in macOS 10.14}}
-
 void test_const_lvalue_cast_request_non_const_lvalue()
 {
     const any a;

test/std/utilities/any/any.nonmembers/any.cast/const_correctness.fail.cpp

@@ -7,6 +7,7 @@
 //===----------------------------------------------------------------------===//
 
 // UNSUPPORTED: c++98, c++03, c++11, c++14
+// UNSUPPORTED: dylib-has-no-bad_any_cast
 
 // <any>
 
@@ -20,10 +21,6 @@
 struct TestType {};
 struct TestType2 {};
 
-// On platforms that do not support any_cast, an additional availability error
-// is triggered by these tests.
-// expected-error@const_correctness.fail.cpp:* 0+ {{call to unavailable function 'any_cast': introduced in macOS 10.14}}
-
 int main(int, char**)
 {
     using std::any;

test/std/utilities/any/any.nonmembers/any.cast/not_copy_constructible.fail.cpp

@@ -7,6 +7,7 @@
 //===----------------------------------------------------------------------===//
 
 // UNSUPPORTED: c++98, c++03, c++11, c++14
+// UNSUPPORTED: dylib-has-no-bad_any_cast
 
 // <any>
 
@@ -39,10 +40,6 @@ struct no_move {
   no_move(no_move const&) {}
 };
 
-// On platforms that do not support any_cast, an additional availability error
-// is triggered by these tests.
-// expected-error@not_copy_constructible.fail.cpp:* 0+ {{call to unavailable function 'any_cast': introduced in macOS 10.14}}
-
 int main(int, char**) {
     any a;
     // expected-error-re@any:* {{static_assert failed{{.*}} "ValueType is required to be an lvalue reference or a CopyConstructible type"}}