Remove media feed and support code.

This feature was not launched, so remove its code.

Change-Id: I0c4095cbe501c6ad54cb46fdd2c96f0d0bbdf1c6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2803838
Reviewed-by: Avi Drissman <avi@chromium.org>
Reviewed-by: Tommy Steimel <steimel@chromium.org>
Reviewed-by: Side YILMAZ <sideyilmaz@chromium.org>
Reviewed-by: Frank Liberato <liberato@chromium.org>
Reviewed-by: Weilun Shi <sweilun@chromium.org>
Commit-Queue: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#869846}
diff --git a/media-feeds/META.yml b/media-feeds/META.yml
deleted file mode 100644
index 47656c5..0000000
--- a/media-feeds/META.yml
+++ /dev/null
@@ -1,3 +0,0 @@
-spec: https://wicg.github.io/media-feeds/
-suggested_reviewers:
-  - beccahughes
diff --git a/media-feeds/link-rel-media-feed.html b/media-feeds/link-rel-media-feed.html
deleted file mode 100644
index e266e5a..0000000
--- a/media-feeds/link-rel-media-feed.html
+++ /dev/null
@@ -1,11 +0,0 @@
-<!DOCTYPE html>
-<title>Test that "media-feed" is a supported value for the `rel` of a `link`</title>
-<link rel="help" href="https://wicg.github.io/media-feeds/">
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-<script>
-test(() => {
-    const result = document.createElement("link").relList.supports("media-feed")
-    assert_true(result, "Expected true if media-feed is supported as a link relationship");
-}, 'link element supports a rel value of "media-feed".');
-</script>