Do not merge third_party/angle_dx11

This is no longer needed and replaced by third_party/angle.

Change-Id: I19c8303745dd0211e96416fe77c3c4f0a3f0e2cc
diff --git a/chromium/tools/merge_common.py b/chromium/tools/merge_common.py
index e0bda24..c38df88 100644
--- a/chromium/tools/merge_common.py
+++ b/chromium/tools/merge_common.py
@@ -37,7 +37,6 @@
     'sdch/open-vcdiff',
     'testing/gtest',
     'third_party/angle',
-    'third_party/angle_dx11',
     'third_party/eyesfree/src/android/java/src/com/googlecode/eyesfree/braille',
     'third_party/freetype',
     'third_party/icu',