mylvmbackup: remove meta.homepage from fetch url

pkgs/tools/backup/mylvmbackup/default.nix

···
   version = "0.16";
 
   src = fetchurl {
-    url = "${meta.homepage}/${pname}-${version}.tar.gz";
+    url = "https://www.lenzg.net/mylvmbackup/${pname}-${version}.tar.gz";
     sha256 = "sha256-vb7M3EPIrxIz6jUwm241fzaEz2czqdCObrFgSOSgJRU=";
   };