nixos/treewide: Move rename.nix imports to their respective modules

A centralized list for these renames is not good because:
- It breaks disabledModules for modules that have a rename defined
- Adding/removing renames for a module means having to find them in the
central file
- Merge conflicts due to multiple people editing the central file

nixos/modules/system/boot/luksroot.nix

@@ -126,7 +126,7 @@ let
 
     gpg-agent --daemon --scdaemon-program $out/bin/scdaemon > /dev/null 2> /dev/null
     ''}
-        
+
     # Disable all input echo for the whole stage. We could use read -s
     # instead but that would ocasionally leak characters between read
     # invocations.
@@ -417,6 +417,9 @@ let
 
 in
 {
+  imports = [
+    (mkRemovedOptionModule [ "boot" "initrd" "luks" "enable" ] "")
+  ];
 
   options = {