This reverts commit 872c31d4ce.
Depending on the short commit hash (one that starts with a digit) this
will set major/minor/patch to the same value which will be used by
aom_codec_version() resulting in a warning due to the version number
exceeding 32-bits.
BUG=https://bugs.chromium.org/p/aomedia/issues/detail?id=4
Change-Id: I18751004f8436a1d3e31aaf5683fbc7d63825a6a