Revert of skia: Add 'skia_unittests' test suite for this directory.

testing/buildbot/chromium.win.json

Index: testing/buildbot/chromium.win.json
diff --git a/testing/buildbot/chromium.win.json b/testing/buildbot/chromium.win.json
index a138a360155e89bc03e3b0738ec4be3234bafa5a..c7ae0d48aa5b09a331946fab61838c03ecd0358e 100644
--- a/testing/buildbot/chromium.win.json
+++ b/testing/buildbot/chromium.win.json
@@ -86,8 +86,7 @@
       "ui_touch_selection_unittests",
       "url_unittests",
       "views_unittests",
-      "wm_unittests",
-      "skia_unittests"
+      "wm_unittests"
     ],
     "scripts": [
       {
@@ -197,8 +196,7 @@
       "ui_touch_selection_unittests",
       "url_unittests",
       "views_unittests",
-      "wm_unittests",
-      "skia_unittests"
+      "wm_unittests"
     ],
     "scripts": [
       {
@@ -316,8 +314,7 @@
       },
       "url_unittests",
       "views_unittests",
-      "wm_unittests",
-      "skia_unittests"
+      "wm_unittests"
     ],
     "scripts": [
       {
@@ -439,8 +436,7 @@
       },
       "url_unittests",
       "views_unittests",
-      "wm_unittests",
-      "skia_unittests"
+      "wm_unittests"
     ],
     "scripts": [
       {
@@ -556,8 +552,7 @@
       },
       "url_unittests",
       "views_unittests",
-      "wm_unittests",
-      "skia_unittests"
+      "wm_unittests"
     ],
     "scripts": [
       {