RFR: 7903983: Remove redundant findOrThrow method

[Maurizio Cimadamore]

On Fri, 28 Mar 2025 14:11:26 GMT, Nizar Benalla <nbenalla at openjdk.org> wrote:

> `SymbolLookup::FindOrThrow` was introduced in JDK 23, making this method in the generated code redundant:
> 
>   static MemorySegment findOrThrow(String symbol) {
>       return SYMBOL_LOOKUP.findOrThrow(symbol);
>   }
> 
> The generated method should have been dropped in https://github.com/openjdk/jextract/commit/a53f5c05e3ee2cca057cadb78b2e381c39f943d7 but I didn't cleanup all uses of it.
> 
> A small additional cleanup in PR is that the newly added option for framworks now uses `--` rather than `-`
> 
> Edit: all tests pass in CI on all platforms, GitHub failure is unrelated 
> 
> TIA

Looks good!

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Marked as reviewed by mcimadamore (Reviewer).

PR Review: https://git.openjdk.org/jextract/pull/280#pullrequestreview-2726282132