Remove ssh.nix and ignore ssh.nix

.gitignore

@@ -0,0 +1 @@
+ssh.nix

modules/home-manager/ssh.nix

@@ -1,21 +0,0 @@
-{ ... }:
-
-{
-  services.ssh-agent.enable = true;
-
-  home.sessionVariables = {
-    SSH_AUTH_SOCK = "$XDG_RUNTIME_DIR/ssh-agent";
-  };
-
-  programs.ssh = {
-    enable = true;
-    enableDefaultConfig = false;
-    matchBlocks = {
-      "*" = {
-        identitiesOnly = true;
-      };
-
-      include ./ssh-hosts.nix
-    };
-  };
-}