Removed more dragula stuff.

src/Squidex/app/theme/theme.scss

@@ -6,9 +6,6 @@
 // Pikaday
 @import '~pikaday/css/pikaday.css';
 
-// Dragula
-@import '~dragula/dist/dragula.css';
-
 // Bootstrap Overrides
 @import '_bootstrap.scss';
 

src/Squidex/package.json

@@ -49,7 +49,6 @@
     "@angular/compiler-cli": "6.0.4",
     "@ngtools/webpack": "6.0.8",
     "@types/core-js": "2.5.0",
-    "@types/dragula": "2.1.33",
     "@types/jasmine": "2.8.8",
     "@types/mousetrap": "1.6",
     "@types/node": "10.1.2",