[dart2wasm] Remove JSC bug workaround

JavaScriptCore's wasm interpreter was buggy which caused many segfaults
on our CI, which made us implement this workaround (namely to disable
the wasm interpreter)

It seems it has matured, so we can remove this workaround.

Doing so may also lead to less jsc crashes / instability on CI and will
make us use default flags (testing closer to what is used in real
Safari)

Change-Id: Id30a017dcf1b3b37e6c0c99bddfa634b96bf45ac
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/458100
Reviewed-by: Nate Biggs <[email protected]>
Commit-Queue: Martin Kustermann <[email protected]>

Author: mkustermann

pkg/test_runner/lib/src/runtime_configuration.dart

@@ -244,13 +244,9 @@ class JSCRuntimeConfiguration extends CommandLineJavaScriptRuntime {
     if (compiler != Compiler.dart2wasm) {
       throw 'No test runner setup for jsc + dart2js yet';
     }
-    // TODO(https://bugs.webkit.org/show_bug.cgi?id=285902): Once the
-    // JavaScriptCore/WebKit bug is fixed we should be able to remove this
-    // again.
-    const jscBugWorkaround = '--shell-option=--useWasmIPInt=false';
     return [
       Dart2WasmCommandLineCommand(moniker, 'pkg/dart2wasm/tool/run_benchmark',
-          ['--jsc', jscBugWorkaround, ...arguments], environmentOverrides)
+          ['--jsc', ...arguments], environmentOverrides)
     ];
   }
 }