Remove unnecessary set noparent rules from third_party

Bug: 1018108
Change-Id: Ia29e269f2335ee91432f3c4eb308d7ae3b8ac72b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1890431Reviewed-by: Andrey Kosyakov <caseq@chromium.org>
Reviewed-by: Philip Jägenstedt <foolip@chromium.org>
Reviewed-by: Luke Z <lpz@chromium.org>
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Reviewed-by: John Rummell <jrummell@chromium.org>
Commit-Queue: Jochen Eisinger <jochen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#713363}

third_party/blink/renderer/build/scripts/core/OWNERS

-set noparent
-file://third_party/blink/renderer/core/OWNERS
-
-# TEAM: blink-dev@chromium.org
-# COMPONENT: Blink

third_party/blink/web_tests/OWNERS

 *
-
-per-file SmokeTests=set noparent
-per-file SmokeTests=file://third_party/blink/tools/OWNERS

third_party/blink/web_tests/external/wpt/tools/OWNERS

@@ -2,9 +2,8 @@
 # Almost all changes should be made in the upstream repository at
 # https://github.com/web-platform-tests/wpt and then be imported into the
 # Chromium repo.
-# Team alias: ecosystem-infra@chromium.org
-set noparent
 foolip@chromium.org
 lpz@chromium.org
 robertma@chromium.org
 
+# Team alias: ecosystem-infra@chromium.org

third_party/crashpad/OWNERS

@@ -8,8 +8,6 @@
 # Crashpad, all changes should first be made in the upstream Crashpad
 # repository, and then imported here. See README.chromium.
 
-set noparent
-
 mark@chromium.org
 rsesek@chromium.org
 scottmg@chromium.org

third_party/inspector_protocol/OWNERS

-set noparent
 alph@chromium.org
 caseq@chromium.org
 dgozman@chromium.org

third_party/widevine/OWNERS

-set noparent
 jrummell@chromium.org
 xhwang@chromium.org