[clang] [llvm] [analyzer] Delete `alpha.security.MallocOverflow` (PR #103059)

[Donát Nagy via cfe-commits]

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@@ -1039,10 +1039,6 @@ def ArrayBoundCheckerV2 : Checker<"ArrayBoundV2">,
   HelpText<"Warn about buffer overflows (newer checker)">,
   Documentation<HasDocumentation>;
 
-def MallocOverflowSecurityChecker : Checker<"MallocOverflow">,
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NagyDonat wrote:

Is it possible to write a "this checker no longer exists, but references to its name should not be an error" placeholder in this TD file?

If you readily know a solution, I'd be happy to add it, but I don't want to spend time on researching it.

https://github.com/llvm/llvm-project/pull/103059