chore: delete obsolete files, packages, imports and polyfills

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@coreui/coreui-free-vue-admin-template",
-  "version": "3.0.0-alpha.2",
+  "version": "3.0.0-alpha.3",
   "description": "Open Source Bootstrap Admin Template",
   "author": "Łukasz Holeczek",
   "homepage": "http://coreui.io",
@@ -16,21 +16,10 @@
   "dependencies": {
     "@coreui/coreui": "next",
     "@coreui/coreui-plugin-chartjs-custom-tooltips": "^1.3.0",
-    "@coreui/coreui-vue-chartjs": "file:../coreui-vue-chartjs",
-    "@coreui/icons": "../coreui-icons",
-    "@coreui/vue": "file:../coreui-vue",
-    "babel-polyfill": "^6.26.0",
-    "bootstrap": "^4.1.3",
-    "chart.js": "^2.7.3",
-    "core-js": "^2.5.7",
-    "css-vars-ponyfill": "^1.11.1",
-    "current-script-polyfill": "^1.0.0",
-    "element-resize-detector": "^1.2.0",
-    "perfect-scrollbar": "^1.4.0",
-    "tooltip.js": "^1.3.1",
-    "vue": "^2.6.6",
-    "vue-chartjs": "^3.4.0",
-    "vue-perfect-scrollbar": "^0.1.0",
+    "@coreui/coreui-vue-chartjs": "coreui/coreui-vue-chartjs",
+    "@coreui/icons": "coreui/coreui-icons#v1-alpha",
+    "@coreui/vue": "../coreui-vue",
+    "vue": "^2.6.10",
     "vue-router": "^3.0.1"
   },
   "devDependencies": {