[css-tables] Remove column collapsing from experimental

It's no longer in *active* development but it's a good feature and we
hope to get back to it.

Marked all the tests as Failure.

Bug: 174167

Change-Id: I9ec257a2ac644ccc8588043c63c796aa8185094b
Reviewed-on: https://chromium-review.googlesource.com/1208432
Commit-Queue: David Grogan <dgrogan@chromium.org>
Reviewed-by: Chris Harrelson <chrishtr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#589015}

third_party/WebKit/LayoutTests/TestExpectations

@@ -288,6 +288,16 @@ crbug.com/708345 external/wpt/css/css-tables/height-distribution/extra-height-gi
 crbug.com/708345 external/wpt/css/css-tables/height-distribution/extra-height-given-to-all-row-groups-004.html [ Failure ]
 crbug.com/708345 external/wpt/css/css-tables/height-distribution/extra-height-given-to-all-row-groups-005.html [ Failure ]
 crbug.com/694374 external/wpt/css/css-tables/anonymous-table-ws-001.html [ Failure ]
+crbug.com/174167 external/wpt/css/css-tables/visibility-collapse-col-001.html [ Failure ]
+crbug.com/174167 external/wpt/css/css-tables/visibility-collapse-col-002.html [ Failure ]
+crbug.com/174167 external/wpt/css/css-tables/visibility-collapse-col-003.html [ Failure ]
+crbug.com/174167 external/wpt/css/css-tables/visibility-collapse-col-004-dynamic.html [ Failure ]
+crbug.com/174167 external/wpt/css/css-tables/visibility-collapse-col-005.html [ Failure ]
+crbug.com/174167 external/wpt/css/css-tables/visibility-collapse-colspan-001.html [ Failure ]
+crbug.com/174167 external/wpt/css/css-tables/visibility-collapse-colspan-002.html [ Failure ]
+crbug.com/174167 external/wpt/css/css-tables/visibility-collapse-colspan-003.html [ Failure ]
+crbug.com/174167 external/wpt/css/css-tables/visibility-collapse-rowcol-001.html [ Failure ]
+crbug.com/174167 external/wpt/css/css-tables/visibility-collapse-rowcol-002.html [ Failure ]
 
 # [css-contain]
 

third_party/blink/renderer/platform/runtime_enabled_features.json5

@@ -1265,7 +1265,6 @@
     },
     {
       name: "VisibilityCollapseColumn",
-      status: "experimental",
     },
     {
       name: "WakeLock",