[main][sgen] Remove two dead fields; fix wasm-mt AOT compilation #75511
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They were only initialized, but never read. But what they did do is change the SgenClientInfo field offsets between the threaded and non-threaded wasm runtimes (because emscripten only has HAVE_PTHREAD_KILL in the threaded build). As a result the offsets for tlab_start, tlab_next and tlab_temp_end were different for the AOT compilers targeting threaded vs non-threaded WASM. This PR removes the two unused fields which will make the two wasm configurations match again, allowing us to ship a single AOT cross compiler for both threaded and non-threaded wasm.
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Sep 13, 2022
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Forward port of #75509 to main
They were only initialized, but never read.
But what they did do is change the SgenClientInfo field offsets between the threaded and non-threaded wasm runtimes (because emscripten only has HAVE_PTHREAD_KILL in the threaded build). As a result the offsets for tlab_start, tlab_next and tlab_temp_end were different for the AOT compilers targeting threaded vs non-threaded WASM.
This PR removes the two unused fields which will make the two wasm configurations match again, allowing us to ship a single AOT cross compiler for both threaded and non-threaded wasm.
Fixes #75474