Revert of Add accessibility_unittests and chromevox_tests to buildbot config.

testing/buildbot/chromium.fyi.json

Index: testing/buildbot/chromium.fyi.json
diff --git a/testing/buildbot/chromium.fyi.json b/testing/buildbot/chromium.fyi.json
index 5503e5815454d05a6d4b76e184bb40bbac2c723f..23c03167566cef7aa4cd91ee671bedc6de8bf037 100644
--- a/testing/buildbot/chromium.fyi.json
+++ b/testing/buildbot/chromium.fyi.json
@@ -1,7 +1,6 @@
 {
   "Linux Trusty": {
     "gtest_tests": [
-      "accessibility_unittests",
       "app_list_unittests",
       "aura_unittests",
       "interactive_ui_tests",
@@ -56,7 +55,6 @@
   },
   "Linux Trusty (dbg)": {
     "gtest_tests": [
-      "accessibility_unittests",
       "app_list_unittests",
       "aura_unittests",
       "interactive_ui_tests",
@@ -111,7 +109,6 @@
   },
   "Linux Trusty (32)": {
     "gtest_tests": [
-      "accessibility_unittests",
       "app_list_unittests",
       "aura_unittests",
       "interactive_ui_tests",
@@ -166,7 +163,6 @@
   },
   "Linux Trusty (dbg)(32)": {
     "gtest_tests": [
-      "accessibility_unittests",
       "app_list_unittests",
       "aura_unittests",
       "interactive_ui_tests",
@@ -229,7 +225,6 @@
   },
   "Chromium Linux MSan": {
     "gtest_tests": [
-      "accessibility_unittests",
       "base_unittests",
       "browser_tests",
       "cacheinvalidation_unittests",