Clear redundant condition check from vp10_ext_tile_test.cc
Clear redundant condition check from vp10_ext_tile_test.cc

Change-Id: I74e9df9e314e49b931c23a81d14f5a9e143b0b7d

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