Remove hardcoded wasm worker deps. NFC (#20973)

The bug that required these hardcoded exports has now been fixed.

Author: sbc100

src/library_wasm_worker.js

@@ -69,7 +69,15 @@ addToLibrary({
 
   // src/postamble_minimal.js brings this symbol in to the build, and calls this
   // function synchronously from main JS file at the startup of each Worker.
-  $_wasmWorkerInitializeRuntime__deps: ['$_wasmWorkerDelayedMessageQueue', '$_wasmWorkerRunPostMessage', '$_wasmWorkerAppendToQueue', 'emscripten_wasm_worker_initialize'],
+  $_wasmWorkerInitializeRuntime__deps: [
+    '$_wasmWorkerDelayedMessageQueue',
+    '$_wasmWorkerRunPostMessage',
+    '$_wasmWorkerAppendToQueue',
+    'emscripten_wasm_worker_initialize',
+#if PTHREADS
+    '__set_thread_state',
+#endif
+  ],
   $_wasmWorkerInitializeRuntime: () => {
     let m = Module;
 #if ASSERTIONS

tools/link.py

@@ -1331,11 +1331,6 @@ def phase_linker_setup(options, state, newargs):
     settings.WASM_BIGINT = 1
 
   if settings.WASM_WORKERS:
-    # TODO: After #15982 is resolved, these dependencies can be declared in library_wasm_worker.js
-    #       instead of having to record them here.
-    wasm_worker_imports = ['_emscripten_wasm_worker_initialize', '___set_thread_state']
-    settings.EXPORTED_FUNCTIONS += wasm_worker_imports
-    building.user_requested_exports.update(wasm_worker_imports)
     settings.DEFAULT_LIBRARY_FUNCS_TO_INCLUDE += ['$_wasmWorkerInitializeRuntime']
     # set location of Wasm Worker bootstrap JS file
     if settings.WASM_WORKERS == 1: