removed package "intersection-observer"

package.json

@@ -12,7 +12,6 @@
   "dependencies": {
     "bootstrap": "3.3.7",
     "imagesloaded": "^4.1.4",
-    "intersection-observer": "^0.5.0",
     "shufflejs": "^5.0.3",
     "vue-i18n": "^7.4.2",
     "vue-multiselect": "2.0.8"

yarn.lock

@@ -2911,11 +2911,6 @@ interpret@^1.0.0:
   resolved "https://registry.yarnpkg.com/interpret/-/interpret-1.2.0.tgz#d5061a6224be58e8083985f5014d844359576296"
   integrity sha512-mT34yGKMNceBQUoVn7iCDKDntA7SC6gycMAWzGx1z/CMCTV7b2AAtXlo3nRyHZ1FelRkQbQjprHSYGwzLtkVbw==
 
-intersection-observer@^0.5.0:
-  version "0.5.1"
-  resolved "https://registry.yarnpkg.com/intersection-observer/-/intersection-observer-0.5.1.tgz#e340fc56ce74290fe2b2394d1ce88c4353ac6dfa"
-  integrity sha512-Zd7Plneq82kiXFixs7bX62YnuZ0BMRci9br7io88LwDyF3V43cQMI+G5IiTlTNTt+LsDUppl19J/M2Fp9UkH6g==
-
 invariant@^2.2.2:
   version "2.2.4"
   resolved "https://registry.yarnpkg.com/invariant/-/invariant-2.2.4.tgz#610f3c92c9359ce1db616e538008d23ff35158e6"