scala: Replace VM test with installCheckPhase

nixos/tests/all-tests.nix

@@ -345,7 +345,6 @@ in
   sanoid = handleTest ./sanoid.nix {};
   sbt = handleTest ./sbt.nix {};
   sbt-extras = handleTest ./sbt-extras.nix {};
-  scala = handleTest ./scala.nix {};
   sddm = handleTest ./sddm.nix {};
   searx = handleTest ./searx.nix {};
   service-runner = handleTest ./service-runner.nix {};

nixos/tests/scala.nix

@@ -1,33 +0,0 @@
-{ system ? builtins.currentSystem,
-  config ? {},
-  pkgs ? import ../.. { inherit system config; }
-}:
-
-with pkgs.lib;
-
-let
-  common = name: package: (import ./make-test-python.nix ({
-    inherit name;
-    meta = with pkgs.lib.maintainers; {
-      maintainers = [ nequissimus ];
-    };
-
-    nodes = {
-      scala = { ... }: {
-        environment.systemPackages = [ package ];
-      };
-    };
-
-    testScript = ''
-      start_all()
-
-      scala.succeed("scalac -version 2>&1 | grep '^Scala compiler version ${package.version}'")
-    '';
-  }) { inherit system; });
-
-in with pkgs; {
-  scala_2_10  = common "scala_2_10"  scala_2_10;
-  scala_2_11  = common "scala_2_11"  scala_2_11;
-  scala_2_12  = common "scala_2_12"  scala_2_12;
-  scala_2_13  = common "scala_2_13"  scala_2_13;
-}