Sanitize OWNERS for Blink Sydney Style and Animations team

Bug: 
Change-Id: I5857b11ae92b7dabc24fce281d19c2a40854fe2c
Reviewed-on: https://chromium-review.googlesource.com/885685
Commit-Queue: nainar <nainar@chromium.org>
Reviewed-by: Darren Shen <shend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#531848}

third_party/WebKit/Source/core/OWNERS

@@ -41,9 +41,10 @@ kenneth.r.christiansen@intel.com
 kinuko@chromium.org
 kojii@chromium.org
 kouhei@chromium.org
-meade@chromium.org
 mkwst@chromium.org
 mstensho@chromium.org
+# nainar reviews changes in core/css,core/style
+# and related code in core/dom and core/layout.
 nainar@chromium.org
 ojan@chromium.org
 # pdr reviews many svg and text autosizing patches.

third_party/WebKit/Source/core/animation/OWNERS

@@ -3,10 +3,7 @@ smcgruer@chromium.org
 
 # Legacy owners:
 alancutter@chromium.org
-dstockwell@chromium.org
 ericwilligers@chromium.org
-shans@chromium.org
-timloh@chromium.org
 
 per-file Compositor*=loyso@chromium.org
 

third_party/WebKit/Source/core/css/OWNERS

-bugsnash@chromium.org
 ericwilligers@chromium.org
-nainar@chromium.org
 shend@chromium.org
-rjwright@chromium.org
 
 # Also core owners
 alancutter@chromium.org
-meade@chromium.org
+nainar@chromium.org
 
 # COMPONENT: Blink>CSS

third_party/WebKit/Source/core/style/OWNERS

-bugsnash@chromium.org
 ericwilligers@chromium.org
-nainar@chromium.org
 shend@chromium.org
-rjwright@chromium.org
 
 # Also core owners
 alancutter@chromium.org
-meade@chromium.org
+nainar@chromium.org
 
 # COMPONENT: Blink>CSS