Remove stale platform-specific expectations

LayoutTests/platform/win/media/video-volume-slider-expected.txt

Index: LayoutTests/platform/win/media/video-volume-slider-expected.txt
diff --git a/LayoutTests/platform/win/media/video-volume-slider-expected.txt b/LayoutTests/platform/win/media/video-volume-slider-expected.txt
deleted file mode 100644
index 1a0e587ad674a48f4e98c5368687d6c0a6b1d977..0000000000000000000000000000000000000000
--- a/LayoutTests/platform/win/media/video-volume-slider-expected.txt
+++ /dev/null
@@ -1,48 +0,0 @@
-layer at (0,0) size 800x600
-  RenderView at (0,0) size 800x600
-layer at (0,0) size 800x600
-  RenderBlock {HTML} at (0,0) size 800x600
-    RenderBody {BODY} at (8,8) size 784x584
-      RenderText {#text} at (0,0) size 413x19
-        text run at (0,0) width 413: "Tests if the volume slider is rendererd properly. This test assumes the"
-      RenderBR {BR} at (413,15) size 0x0
-      RenderText {#text} at (0,20) size 423x19
-        text run at (0,20) width 423: "volume slider is implmented and mouse over the right bottom corner of"
-      RenderBR {BR} at (423,35) size 0x0
-      RenderText {#text} at (0,40) size 252x19
-        text run at (0,40) width 252: "video element will show the volume slider."
-      RenderBR {BR} at (252,55) size 0x0
-      RenderText {#text} at (0,0) size 0x0
-layer at (8,68) size 320x240
-  RenderVideo {VIDEO} at (0,60) size 320x240
-layer at (8,68) size 320x240
-  RenderDeprecatedFlexibleBox (relative positioned) {DIV} at (0,0) size 320x240
-layer at (8,276) size 320x32
-  RenderDeprecatedFlexibleBox (relative positioned) {DIV} at (0,208) size 320x32 [bgcolor=#00000099]
-    RenderBlock {DIV} at (286,0) size 34x32
-layer at (15,282) size 18x19
-  RenderButton {INPUT} at (7,6) size 18x19
-layer at (38,276) size 256x32
-  RenderDeprecatedFlexibleBox (positioned) {DIV} at (30,0) size 256x32 [border: (1px solid #FFFFFF33) none (1px solid #FFFFFF33)]
-    RenderSlider {INPUT} at (7,7) size 184x18 [color=#328CDF] [bgcolor=#FFFFFF14] [border: (1px solid #FFFFFF33)]
-      RenderDeprecatedFlexibleBox {DIV} at (1,1) size 182x16
-        RenderBlock {DIV} at (0,0) size 173x29
-        RenderBlock {DIV} at (173,0) size 9x29
-layer at (235,282) size 58x20 scrollHeight 21
-  RenderDeprecatedFlexibleBox {DIV} at (197,6) size 58x20 [color=#FFFFFF]
-    RenderBlock (anonymous) at (8,0) size 42x21
-      RenderText {#text} at (0,1) size 42x19
-        text run at (0,1) width 42: "00:00"
-layer at (46,278) size 9x30
-  RenderBlock (relative positioned) {DIV} at (0,-7) size 9x30
-layer at (294,176) size 34x100
-  RenderBlock (positioned) {DIV} at (286,-100) size 34x100 [bgcolor=#00000099]
-layer at (306,186) size 10x80
-  RenderSlider {INPUT} at (12,10) size 10x80
-    RenderDeprecatedFlexibleBox {DIV} at (0,0) size 10x80
-      RenderBlock {DIV} at (0,0) size 14x73
-      RenderBlock {DIV} at (0,73) size 14x7
-layer at (306,208) size 14x7
-  RenderBlock (relative positioned) {DIV} at (0,0) size 14x7
-layer at (294,276) size 34x32
-  RenderButton {INPUT} at (0,0) size 34x32