Remove duplicate expectation files. These tests still pass on my machine.

webkit/data/layout_tests/platform/chromium-linux/LayoutTests/editing/selection/5057506-expected.txt

Index: webkit/data/layout_tests/platform/chromium-linux/LayoutTests/editing/selection/5057506-expected.txt
diff --git a/webkit/data/layout_tests/platform/chromium-linux/LayoutTests/editing/selection/5057506-expected.txt b/webkit/data/layout_tests/platform/chromium-linux/LayoutTests/editing/selection/5057506-expected.txt
deleted file mode 100644
index a92aca93061e5f24c5a7a113e35a4cfd65f64498..0000000000000000000000000000000000000000
--- a/webkit/data/layout_tests/platform/chromium-linux/LayoutTests/editing/selection/5057506-expected.txt
+++ /dev/null
@@ -1,30 +0,0 @@
-ALERT: 33
-ALERT: 116.5
-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
-      RenderBlock {P} at (0,0) size 784x80
-        RenderText {#text} at (0,0) size 771x79
-          text run at (0,0) width 477: "This tests double clicking after the last character in the last cell of a block table. "
-          text run at (477,0) width 294: "The paragraph break (the space between the last"
-          text run at (0,20) width 448: "character and the first character in the next paragraph) should be selected. "
-          text run at (448,20) width 272: "Selection painting problems might prevent the"
-          text run at (0,40) width 373: "paragraph break from appearing as selected even though it is. "
-          text run at (373,40) width 377: "To test manually, double click inside the table cell, after the last"
-          text run at (0,60) width 152: "character, and hit delete. "
-          text run at (152,60) width 265: "Afterward, the table should contain 'foobar'."
-      RenderBlock {DIV} at (0,96) size 784x50
-        RenderTable {TABLE} at (0,0) size 110x30 [border: (1px outset #808080)]
-          RenderTableSection {TBODY} at (1,1) size 108x28
-            RenderTableRow {TR} at (0,2) size 108x24
-              RenderTableCell {TD} at (2,2) size 104x24 [border: (1px inset #808080)] [r=0 c=0 rs=1 cs=1]
-                RenderInline {SPAN} at (0,0) size 20x19
-                  RenderText {#text} at (2,2) size 20x19
-                    text run at (2,2) width 20: "foo"
-        RenderBlock {DIV} at (0,30) size 784x20
-          RenderText {#text} at (0,0) size 20x19
-            text run at (0,0) width 20: "bar"
-selection start: position 3 of child 0 {#text} of child 0 {SPAN} of child 0 {TD} of child 0 {TR} of child 0 {TBODY} of child 1 {TABLE} of child 2 {DIV} of child 0 {BODY} of child 0 {HTML} of document
-selection end:   position 0 of child 3 {DIV} of child 2 {DIV} of child 0 {BODY} of child 0 {HTML} of document