CODEOWNERS: remove samueldr

Author: eclairevoyant

.github/CODEOWNERS

@@ -115,8 +115,8 @@ nixos/modules/installer/tools/nix-fallback-paths.nix  @raitobezarius
 /nixos/modules/system/boot/loader/systemd-boot      @JulienMalka
 
 # Images and installer media
-/nixos/modules/installer/cd-dvd/            @samueldr
-/nixos/modules/installer/sd-card/           @samueldr
+/nixos/modules/installer/cd-dvd/
+/nixos/modules/installer/sd-card/
 
 # Updaters
 ## update.nix