Reenable D3D12 test OpArrayLengthTest with tint generator

Array lengths now work

Fixed: dawn:657
Change-Id: I31d72ae02fb31edbc2143e1d3356681a283a4a16
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/47426
Auto-Submit: Ben Clayton <bclayton@google.com>
Commit-Queue: Austin Eng <enga@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>
diff --git a/src/tests/end2end/OpArrayLengthTests.cpp b/src/tests/end2end/OpArrayLengthTests.cpp
index b7eb7c3..cebe3f9 100644
--- a/src/tests/end2end/OpArrayLengthTests.cpp
+++ b/src/tests/end2end/OpArrayLengthTests.cpp
@@ -216,9 +216,6 @@
     DAWN_SKIP_TEST_IF(IsNvidia() && IsOpenGL());
     DAWN_SKIP_TEST_IF(IsOpenGLES());
 
-    // TODO(crbug.com/dawn/657): Returned data is slightly incorrect in this case.
-    DAWN_SKIP_TEST_IF(HasToggleEnabled("use_tint_generator") && IsIntel() && IsOpenGL());
-
     utils::BasicRenderPass renderPass = utils::CreateBasicRenderPass(device, 1, 1);
 
     // Create the pipeline that computes the length of the buffers and writes it to the only render