It was probably removed from Aminet because v7.1 was competing with the forthcoming v7.3
To make it short: v7.3 has probably no remarkable new feature to make it viable as a product having its former version free. Most likely just a PPC port with minor fixes.
Even v7.1 was not the best in its day, I fail to see how could a "remastered" version be better, but cultist will adore and praise and others will just be dissapointed.