Remove no_wasm_backend usage from test_core.py

The only remaining usage is in test_browser.py.

Author: sbc100

tests/core/test_intentional_fault.c

@@ -21,14 +21,18 @@ void print_vararg(int n, va_list v) {
 void multi_vararg(int n, ...) {
   va_list v;
 
+  printf("part1:\n");
   va_start(v, n);
   print_vararg(n, v);
-  print_vararg(n, v); // the value of v is undefined for this call
   va_end(v);
 
+  printf("part2:\n");
   va_start(v, n);
   print_vararg(n, v);
+  printf("part3:\n");
+  print_vararg(n, v); // the value of v is undefined for this call
   va_end(v);
+
 }
 
 int main() {

tests/core/test_llvm_intrinsics.cpp

@@ -1,3 +1,6 @@
+part1:
+8, 6, 4, 2, 0
+part2:
+8, 6, 4, 2, 0
+part3:
 8, 6, 4, 2, 0
-1, 3, 5, 7, 9
-8, 6, 4, 2, 0

tests/core/test_lower_intrinsics.c

@@ -151,14 +151,6 @@ def decorated(self, *args, **kwargs):
   return decorated
 
 
-# Today we only support the wasm backend so any tests that is disabled under the llvm
-# backend is always disabled.
-# TODO(sbc): Investigate all tests with this decorator and either fix of remove the test.
-def no_wasm_backend(note=''):
-  assert not callable(note)
-  return unittest.skip(note)
-
-
 def disabled(note=''):
   assert not callable(note)
   return unittest.skip(note)

tests/core/test_varargs_multi.c

@@ -21,7 +21,7 @@
 from urllib.request import urlopen
 
 from runner import BrowserCore, RunnerCore, path_from_root, has_browser, EMTEST_BROWSER
-from runner import no_wasm_backend, create_test_file, parameterized, ensure_dir
+from runner import create_test_file, parameterized, ensure_dir
 from tools import building
 from tools import shared
 from tools import system_libs
@@ -126,6 +126,14 @@ def decorated(self, *args, **kwargs):
   return decorated
 
 
+# Today we only support the wasm backend so any tests that is disabled under the llvm
+# backend is always disabled.
+# TODO(sbc): Investigate all tests with this decorator and either fix of remove the test.
+def no_wasm_backend(note=''):
+  assert not callable(note)
+  return unittest.skip(note)
+
+
 requires_graphics_hardware = unittest.skipIf(os.getenv('EMTEST_LACKS_GRAPHICS_HARDWARE'), "This test requires graphics hardware")
 requires_sound_hardware = unittest.skipIf(os.getenv('EMTEST_LACKS_SOUND_HARDWARE'), "This test requires sound hardware")
 requires_sync_compilation = unittest.skipIf(is_chrome(), "This test requires synchronous compilation, which does not work in Chrome (except for tiny wasms)")