Revert "libtensorflow: fix hashes for darwin and cuda downloads"

This reverts commit 93ed13f.

libtensorflow is only used by the Haskell tensorflow packages and they
don't work with tensorflow-1.10 yet. So the easiest solution is to
just revert this commit and add it back when they do gain support.

pkgs/development/libraries/libtensorflow/default.nix

@@ -38,12 +38,12 @@ in stdenv.mkDerivation rec {
     sha256 =
       if system == "linux-x86_64" then
         if cudaSupport
-        then "0v66sscxpyixjrf9yjshl001nix233i6chc61akx0kx7ial4l1wn"
+        then "1q3mh06x344im25z7r3vgrfksfdsi8fh8ldn6y2mf86h4d11yxc3"
         else "11sbpcbgdzj8v17mdppfv7v1fn3nbzkdad60gc42y2j6knjbmwxb"
       else if system == "darwin-x86_64" then
         if cudaSupport
         then unavailable
-        else "11p0f77m4wycpc024mh7jx0kbdhgm0wp6ir6dsa8lkcpdb59bn59"
+        else "1qj0v1706w6mczycdsh38h2glyv5d25v62kdn98wxd5rw8f9v657"
       else unavailable;
   };