Remove some suppressions for win vulkan amd

They should be fixed as they are passing now after removing the suppressions.

TBR=kbr@chromium.org

Bug: 931016
Change-Id: I759adca3e15ba6b6f91cd3e968f63ebd195ce354
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2055343Reviewed-by: Shrek Shao <shrekshao@google.com>
Commit-Queue: Shrek Shao <shrekshao@google.com>
Cr-Commit-Position: refs/heads/master@{#741372}

content/test/gpu/gpu_tests/test_expectations/webgl_conformance_expectations.txt

@@ -295,8 +295,6 @@ crbug.com/angleproject/2898 [ win amd vulkan passthrough ] conformance/extension
 crbug.com/angleproject/2722 [ win amd vulkan passthrough ] conformance/rendering/clipping-wide-points.html [ Failure ]
 crbug.com/angleproject/2926 [ win amd vulkan passthrough ] deqp/data/gles2/shaders/conversions.html [ Failure ]
 crbug.com/angleproject/2926 [ win amd vulkan passthrough ] deqp/data/gles2/shaders/linkage.html [ Failure ]
-crbug.com/931016 [ win amd vulkan passthrough ] conformance/textures/image_bitmap_from_canvas/tex-2d-luminance* [ Failure ]
-crbug.com/931016 [ win amd vulkan passthrough ] conformance/textures/image_bitmap_from_canvas/tex-2d-rgb* [ Failure ]
 crbug.com/974347 [ win amd vulkan passthrough ] conformance/textures/image/tex-2d-luminance-luminance-unsigned_byte.html [ Failure ]
 crbug.com/974347 [ win amd vulkan passthrough ] conformance/textures/image/tex-2d-luminance_alpha-luminance_alpha-unsigned_byte.html [ Failure ]
 crbug.com/1004581 [ win amd vulkan passthrough ] conformance/rendering/multisample-corruption.html [ Failure ]