Fix: correct framerate for 25Hz IVF file
Fix: correct framerate for 25Hz IVF file

Remove legacy workaround.
BUG=aomedia:85

Change-Id: I98ab7a3e3e88300586106982dc1fe3a023b361e0

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