Remove stale WebGPU CTS expectations

Autogenerated CL from running:

//content/test/gpu/unexpected_pass_finder.py --project chrome-unexpected-pass-data --include-internal-builders --remove-stale-expectations --narrow-semi-stale-expectation-scope --num-samples 300 --suite webgpu_cts --jobs 2 --disable-batching -v -v

Affected bugs for CL description:

R=rubber-stamper@appspot.gserviceaccount.com

Bug: dawn:0000
Change-Id: Ia0136f49a96f06dfaa53b62764e5e34f6e4cf8bf
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/159024
Commit-Queue: rubber-stamper@appspot.gserviceaccount.com <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: rubber-stamper@appspot.gserviceaccount.com <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: chrome-automated-expectation@chops-service-accounts.iam.gserviceaccount.com <chrome-automated-expectation@chops-service-accounts.iam.gserviceaccount.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
diff --git a/webgpu-cts/expectations.txt b/webgpu-cts/expectations.txt
index b94b9a8..cf86a2a 100644
--- a/webgpu-cts/expectations.txt
+++ b/webgpu-cts/expectations.txt
@@ -780,7 +780,6 @@
 crbug.com/dawn/0000 [ dawn-backend-validation nvidia-0x2184 target-cpu-64 webgpu-adapter-default webgpu-dxc-enabled win10 ] webgpu:api,validation,state,device_lost,destroy:createTexture,2d,uncompressed_format:* [ RetryOnFailure ]
 crbug.com/dawn/0000 [ dawn-backend-validation nvidia-0x2184 target-cpu-64 webgpu-adapter-default webgpu-dxc-disabled win10 ] webgpu:api,validation,state,device_lost,destroy:createView,2d,uncompressed_format:format="r32sint";usageType="storage";usageCopy="src-dest";awaitLost=true [ RetryOnFailure ]
 crbug.com/dawn/0000 [ dawn-backend-validation nvidia-0x2184 target-cpu-64 webgpu-adapter-default webgpu-dxc-disabled win10 ] webgpu:api,validation,state,device_lost,destroy:createView,2d,uncompressed_format:format="r8sint";usageType="texture";usageCopy="dst";awaitLost=true [ RetryOnFailure ]
-crbug.com/dawn/0000 [ dawn-backend-validation nvidia-0x2184 target-cpu-64 webgpu-adapter-default webgpu-dxc-disabled win10 ] webgpu:api,validation,state,device_lost,destroy:importExternalTexture:sourceType="VideoElement";awaitLost=true [ RetryOnFailure ]
 crbug.com/dawn/0000 [ dawn-backend-validation nvidia-0x2184 target-cpu-64 webgpu-adapter-default webgpu-dxc-disabled win10 ] webgpu:api,validation,state,device_lost,destroy:queue,writeTexture,2d,compressed_format:format="bc2-rgba-unorm-srgb";awaitLost=false [ RetryOnFailure ]
 crbug.com/dawn/0000 [ dawn-backend-validation nvidia-0x2184 target-cpu-64 webgpu-adapter-default webgpu-dxc-disabled win10 ] webgpu:api,validation,state,device_lost,destroy:queue,writeTexture,2d,compressed_format:format="bc6h-rgb-float";awaitLost=false [ RetryOnFailure ]
 crbug.com/dawn/0000 [ android-r dawn-no-backend-validation qualcomm target-cpu-32 webgpu-adapter-default ] webgpu:shader,validation,expression,call,builtin,sqrt:values:stage="constant";type="vec3%3Cabstract-float%3E" [ RetryOnFailure ]