Remove PS packages from package.json

package.json

@@ -10,10 +10,6 @@
     "karma-chrome-launcher": "^3.1.0",
     "karma-cli": "^2.0.0",
     "karma-mocha": "^1.3.0",
-    "mocha": "^7.0.0",
-    "psc-package": "^4.0.1",
-    "pulp": "^15.0.0",
-    "purescript": "^0.14.1",
-    "spago": "^0.20.3"
+    "mocha": "^7.0.0"
   }
 }