docs: instruct account swapping

Author: zimeg

machines/tim/programs/gh/README.md

@@ -0,0 +1,9 @@
+# gh
+
+swapping accounts in certain projects takes commands:
+
+```sh
+$ git config user.name "@zimeg"
+$ git config user.email "zim@o526.net"
+$ git config user.signingKey "~/.ssh/accounts/zimeg"
+```

machines/tim/programs/gh/default.nix

@@ -9,18 +9,6 @@
     };
   };
   programs.git = {
-    includes = [
-      {
-        condition = "hasconfig:remote.*.url:git@zimeg:*";
-        contents = {
-          user = {
-            email = "zim@o526.net";
-            name = "@zimeg";
-            signingKey = "~/.ssh/accounts/zimeg";
-          };
-        };
-      }
-    ];
     signing = {
       key = "~/.ssh/accounts/theorderingmachine";
     };