Fix iosbuild.sh: outdated reference to ios-version.sh
Fix iosbuild.sh: outdated reference to ios-version.sh

File was removed in b29ebfe91c643b4bab1f24c2b55bf0a5a83cb825 but a
reference was missed.

Change-Id: I7a3d81ab196a70cb5691331705f956cc7dc9bb2a

mwgoldsmith/vpx,smarter/aom,webmproject/libvpx,mbebenita/aom,mwgoldsmith/libvpx,smarter/aom,ShiftMediaProject/libvpx,GrokImageCompression/aom,luctrudeau/aom,webmproject/libvpx,mwgoldsmith/libvpx,mwgoldsmith/vpx,smarter/aom,ShiftMediaProject/libvpx,mwgoldsmith/libvpx,mbebenita/aom,webmproject/libvpx,Topopiccione/libvpx,Topopiccione/libvpx,webmproject/libvpx,mbebenita/aom,webmproject/libvpx,mwgoldsmith/libvpx,luctrudeau/aom,mwgoldsmith/vpx,Topopiccione/libvpx,GrokImageCompression/aom,GrokImageCompression/aom,ShiftMediaProject/libvpx,Topopiccione/libvpx,mwgoldsmith/libvpx,mbebenita/aom,smarter/aom,smarter/aom,mwgoldsmith/vpx,mwgoldsmith/vpx,GrokImageCompression/aom,smarter/aom,GrokImageCompression/aom,ShiftMediaProject/libvpx,luctrudeau/aom,luctrudeau/aom,GrokImageCompression/aom,Topopiccione/libvpx,mbebenita/aom,luctrudeau/aom,mwgoldsmith/vpx,mwgoldsmith/libvpx,webmproject/libvpx,Topopiccione/libvpx,ShiftMediaProject/libvpx,luctrudeau/aom,mbebenita/aom,mbebenita/aom,mbebenita/aom,mbebenita/aom