PR summary

Remove the wasmedge_llmc plugin. Upstream deprecated it (WasmEdge/WasmEdge#4964, chore(plugin/llmc): deprecate wasmedge-llmc plugin); rather than migrate it into cpp-plugins, we drop it. Closes #36 (the llmc migration issue). Decision flagged in #36 / #22.

Implementation design

• git rm -r plugins/wasmedge_llmc test/plugins/wasmedge_llmc
• Remove the if(WASMEDGE_PLUGIN_LLMC) add_subdirectory(wasmedge_llmc) stanza from plugins/CMakeLists.txt and test/plugins/CMakeLists.txt.
• libpiper is intentionally untouched — it belongs to wasi_nn (utils/wasi-nn/, utils/build_libpiper.sh), not llmc.

Design decisions

• Removal, not deprecation-carry: cpp-plugins shouldn't ship a plugin upstream is dropping.
• Verified no dangling references remain (wasmedge_llmc / WASMEDGE_PLUGIN_LLMC / wasmedgePluginWasmEdgeLLMC all gone).

Commit slicing

Single authored commit: chore: remove deprecated wasmedge_llmc plugin (#36).

Test plan

• No remaining wasmedge_llmc / WASMEDGE_PLUGIN_LLMC references in the tree
• libpiper / wasi_nn files intact
• clang-format (clang-format-22, ci: adopt WasmEdge clang-format lint method (#45) #49 method) passes — exit 0
• CI: clang-format / super-linter / commitlint expected green; DCO green (single signed commit, author == sign-off)

Interaction with #50 (re-import)

#50 (the faithful refresh re-import) modifies test/plugins/wasmedge_llmc (it carries the upstream deprecation commit), while this PR deletes that dir. Recommended merge order: #50 first (keep the mirror faithful), then this removal as the clean follow-up. If this merges first, #50 needs a trivial modify/delete resolution (keep the deletion).

Non-goals / afterwards

• Build system / migration (feat: standalone CMake build against a released WasmEdge SDK #24, feat: pilot migration: wasmedge_zlib end-to-end (build, tests, CI) #25) unaffected
• Other plugin migrations (feat: migrate wasi_crypto #29–feat: migrate wasmedge_tensorflowlite #42) unaffected

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