[test] Remove test/emscripten_log/emscripten_log_with_closure.cpp. NFC (#23592)

This test was added in #5808, but we can do better by just running the
entire emscripten_log test in closure.

Author: sbc100

test/emscripten_log/emscripten_log_with_closure.cpp

@@ -7884,11 +7884,9 @@ def test_modularize_closure_pre(self):
   @also_with_wasm_bigint
   def test_emscripten_log(self):
     self.emcc_args += ['-g', '-DRUN_FROM_JS_SHELL', '-Wno-deprecated-pragma']
-    self.do_run_in_out_file_test('emscripten_log/emscripten_log.cpp', interleaved_output=False)
-    # test closure compiler as well
     if self.maybe_closure():
       self.emcc_args += ['-g1'] # extra testing
-      self.do_run_in_out_file_test('emscripten_log/emscripten_log_with_closure.cpp', interleaved_output=False)
+    self.do_run_in_out_file_test('emscripten_log/emscripten_log.cpp', interleaved_output=False)
 
   def test_float_literals(self):
     self.do_run_in_out_file_test('test_float_literals.cpp')