Revert "python-pygobject: proper checksums"

This reverts commit 2016d47fa0a1247e3f4299dd31330f2d71b8df0c.
Revert "python-pygobject: proper tar file name"

This reverts commit 98bca1d603b4556fb9b4cd6de15b2c94a363e469.
Revert "python-pygobject: update"

This reverts commit ea91d7f524d174b1bdf3a244fbe260126ebb6313.