Reland a portion of r215672.

The goal is to delete third_party/gles2_book.
This patch deletes all known references.

BUG=98130
TBR=apatrick@chromium.org

Review URL: https://chromiumcodereview.appspot.com/22299002

git-svn-id: http://src.chromium.org/svn/trunk/src/build@215832 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

all.gyp

@@ -148,7 +148,6 @@
             '../sandbox/sandbox.gyp:*',
             '../third_party/angle_dx11/src/build_angle.gyp:*',
             '../third_party/bspatch/bspatch.gyp:*',
-            '../third_party/gles2_book/gles2_book.gyp:*',
           ],
         }, {
           'dependencies': [