[clang] [flang] [llvm] [CMake] Drop per-target LLVM_REQUIRES_RTTI (PR #174201)

[Vassil Vassilev via cfe-commits]

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@@ -1,7 +1,10 @@
 # The interpreter can throw an exception from user input. The test binary needs
 # to be compiled with exception support to catch the thrown exception.
+#
+# NOTE: we compile with exceptions enabled, but (possibly) with RTTI disabled.
+# This only works in these limited circumstances where all exception-related
+# code is in the same library/executable.
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vgvassilev wrote:

The test is not used in non-rtti way: the interpreter environment matches the one of the test. I think that test already works on windows.

https://github.com/llvm/llvm-project/pull/174201