Remove duplicated WebGL layout tests.

third_party/WebKit/LayoutTests/fast/canvas/webgl/canvas-test-expected.txt

Index: third_party/WebKit/LayoutTests/fast/canvas/webgl/canvas-test-expected.txt
diff --git a/third_party/WebKit/LayoutTests/fast/canvas/webgl/canvas-test-expected.txt b/third_party/WebKit/LayoutTests/fast/canvas/webgl/canvas-test-expected.txt
deleted file mode 100644
index fe5b8ca09de4cdc78d4a4996cad5253f3dfcb175..0000000000000000000000000000000000000000
--- a/third_party/WebKit/LayoutTests/fast/canvas/webgl/canvas-test-expected.txt
+++ /dev/null
@@ -1,30 +0,0 @@
-This test ensures WebGL implementations interact correctly with the canvas tag.
-
-On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
-
-
-Canvas.getContext
-PASS context exists
-
-Checking canvas and WebGL interaction
-PASS canvas.width is 300
-PASS canvas.height is 150
-PASS pixels are 0,0,0,0
-PASS getViewport() is "0,0,300,150"
-
-change display size of canvas and see that viewport does not change
-PASS getViewport() is "0,0,300,150"
-PASS canvas.width is 300
-PASS canvas.height is 150
-
-change the actual size of the canvas and see that the viewport does not change
-PASS pixels are 64,128,192,255
-PASS gl.clearColor should not change after canvas resize
-PASS gl.colorMask should not change after canvas resize
-PASS getViewport() is "0,0,300,150"
-PASS pixels are 0,0,0,0
-
-PASS successfullyParsed is true
-
-TEST COMPLETE
-