pkgs/rkvm: remove as it is in nixpkgs now

pkgs/rkvm.nix

@@ -1,46 +0,0 @@
-{ lib
-, fetchFromGitHub
-, rustPlatform
-, pkg-config
-, openssl_1_1
-, llvmPackages
-, libevdev
-, linuxHeaders
-, ...
-}:
-rustPlatform.buildRustPackage {
-  pname = "rkvm";
-  version = "0.0.0";
-
-  src = fetchFromGitHub {
-    owner = "htrefil";
-    repo = "rkvm";
-    rev = "bf133665eb446d9f128d02e4440cc67bce50f666";
-    sha256 = "sha256-naWoLo3pPETkYuW4HATkrfjGcEHSGAAXixgp1HOlIcg=";
-  };
-
-  cargoSha256 = "sha256-5COhHc453QYiUoCtucg/Sz9bGq/Bpn/muDDZTsEsRII=";
-
-  BINDGEN_EXTRA_CLANG_ARGS = "-I${lib.getDev libevdev}/include/libevdev-1.0";
-  LIBCLANG_PATH = "${llvmPackages.libclang.lib}/lib";
-
-  nativeBuildInputs = [ llvmPackages.clang pkg-config openssl_1_1 ];
-  buildInputs = [ libevdev openssl_1_1 linuxHeaders ];
-
-  doCheck = false;
-
-  postInstall = ''
-    mv $out/bin/certificate-gen $out/bin/rkvm-cert-gen
-    mv $out/bin/server $out/bin/rkvm-server
-    mv $out/bin/client $out/bin/rkvm-client
-  '';
-
-  meta = with lib; {
-    description = "Virtual KVM switch for Linux machines";
-    homepage = "https://github.com/htrefil/rkvm";
-    license = licenses.mit;
-    maintainers = with maintainers; [ qbit ];
-    platforms = [ "x86_64-linux" ];
-    mainProgram = "rkvm";
-  };
-}