nixos: Disable OCR for tests that do not use it

Found out during testing of the Tesseract upgrade the kde5 and sddm
tests don't actually use OCR, so let's disable support for it.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
Cc: @ttuegel

nixos/tests/kde5.nix

@@ -20,8 +20,6 @@ import ./make-test.nix ({ pkgs, ...} :
     services.xserver.desktopManager.kde5.enable = true;
   };
 
-  enableOCR = true;
-
   testScript = { nodes, ... }:
   let xdo = "${pkgs.xdotool}/bin/xdotool"; in
    ''

nixos/tests/sddm.nix

@@ -19,8 +19,6 @@ import ./make-test.nix ({ pkgs, ...} : {
     services.xserver.desktopManager.default = "none";
   };
 
-  enableOCR = true;
-
   testScript = { nodes, ... }: ''
     startAll;
     $machine->waitForFile("/home/alice/.Xauthority");