Revert "pc: include all build dependencies"

This reverts commit 9f9e58e54e.

devices/pc/default.nix

@@ -146,6 +146,5 @@ inputs:
     };
     virtualisation.virtualbox.host = { enable = true; enableExtensionPack = true; };
     hardware.nvidia.forceFullCompositionPipeline = true;
-    system.includeBuildDependencies = true;
   };
 }