Disable two flaky tests.
Disable two flaky tests.

BUG=
R=chrisha@chromium.org

Review URL: https://codereview.appspot.com/186560044

Eloston/syzygy,supriyantomaftuh/syzygy,pombreda/syzygy,supriyantomaftuh/syzygy,wangming28/syzygy,ericmckean/syzygy,pombreda/syzygy,google/syzygy,pombreda/syzygy,sebmarchand/syzygy,supriyantomaftuh/syzygy,ericmckean/syzygy,sebmarchand/syzygy,sebmarchand/syzygy,sebmarchand/syzygy,pombreda/syzygy,wangming28/syzygy,ericmckean/syzygy,wangming28/syzygy,wangming28/syzygy,pombreda/syzygy,ericmckean/syzygy,google/syzygy,supriyantomaftuh/syzygy,google/syzygy,Eloston/syzygy,ericmckean/syzygy,google/syzygy,sebmarchand/syzygy