Disable the TestSuperframeIndexIsOptional test with ANS.
Disable the TestSuperframeIndexIsOptional test with ANS.

Change-Id: Id55a741e2015c4e01d156d3fe5319498b016b9cf

GrokImageCompression/aom,luctrudeau/aom,smarter/aom,mbebenita/aom,smarter/aom,luctrudeau/aom,smarter/aom,luctrudeau/aom,GrokImageCompression/aom,GrokImageCompression/aom,luctrudeau/aom,GrokImageCompression/aom,mbebenita/aom,luctrudeau/aom,GrokImageCompression/aom,mbebenita/aom,smarter/aom,mbebenita/aom,GrokImageCompression/aom,mbebenita/aom,mbebenita/aom,mbebenita/aom,mbebenita/aom,smarter/aom,luctrudeau/aom,smarter/aom,mbebenita/aom