[link.py] Remove unnecessary use of state.js_target. NFC (emscripten-…

…core#23315)

The state object in emcc.py is not declared with a js_target member, and
its use is it really not needed.

tools/link.py

@@ -1919,19 +1919,19 @@ def phase_post_link(options, state, in_wasm, wasm_target, target, js_syms, base_
   settings.TARGET_BASENAME = unsuffixed_basename(target)
 
   if options.oformat in (OFormat.JS, OFormat.MJS):
-    state.js_target = target
+    js_target = target
   else:
-    state.js_target = get_secondary_target(target, '.js')
+    js_target = get_secondary_target(target, '.js')
 
-  settings.TARGET_JS_NAME = os.path.basename(state.js_target)
+  settings.TARGET_JS_NAME = os.path.basename(js_target)
 
   metadata = phase_emscript(in_wasm, wasm_target, js_syms, base_metadata)
 
   if settings.EMBIND_AOT:
     phase_embind_aot(wasm_target, js_syms, linker_inputs)
 
   if options.emit_tsd:
-    phase_emit_tsd(options, wasm_target, state.js_target, js_syms, metadata, linker_inputs)
+    phase_emit_tsd(options, wasm_target, js_target, js_syms, metadata, linker_inputs)
 
   if options.js_transform:
     phase_source_transforms(options)
@@ -1940,7 +1940,7 @@ def phase_post_link(options, state, in_wasm, wasm_target, target, js_syms, base_
 
   # If we are not emitting any JS then we are all done now
   if options.oformat != OFormat.WASM:
-    phase_final_emitting(options, state, target, wasm_target)
+    phase_final_emitting(options, state, target, js_target, wasm_target)
 
 
 @ToolchainProfiler.profile_block('emscript')
@@ -2108,7 +2108,7 @@ def create_worker_file(input_file, target_dir, output_file, options):
 
 
 @ToolchainProfiler.profile_block('final emitting')
-def phase_final_emitting(options, state, target, wasm_target):
+def phase_final_emitting(options, state, target, js_target, wasm_target):
   global final_js
 
   if shared.SKIP_SUBPROCS:
@@ -2164,8 +2164,6 @@ def phase_final_emitting(options, state, target, wasm_target):
 
   js_manipulation.handle_license(final_js)
 
-  js_target = state.js_target
-
   # The JS is now final. Move it to its final location
   move_file(final_js, js_target)