Remove unused angular-csp.css

src/styles/vendor/angular-csp.css

-/* Include this file in your html if you are using the CSP mode. */
-
-@charset "UTF-8";
-
-[ng\:cloak], [ng-cloak], [data-ng-cloak], [x-ng-cloak],
-.ng-cloak, .x-ng-cloak,
-.ng-hide {
-  display: none !important;
-}
-
-ng\:form {
-  display: block;
-}
-
-.ng-animate-block-transitions {
-  transition:0s all!important;
-  -webkit-transition:0s all!important;
-}
-
-/* show the element during a show/hide animation when the
- * animation is ongoing, but the .ng-hide class is active */
-.ng-hide-add-active, .ng-hide-remove {
-  display: block!important;
-}