fix(mcl/default.nix): Remove dmd compiler flags from build and test configurations

Author: monyarm

packages/mcl/default.nix

@@ -56,13 +56,11 @@ buildDubPackage rec {
   '';
 
   dubBuildFlags = [
-    "--compiler=dmd"
     "-b"
     "debug"
   ];
 
   dubTestFlags = [
-    "--compiler=dmd"
     "--"
     "-e"
     excludedTests