Remove unused dependency on @babel/polyfill

package.json

@@ -10,7 +10,6 @@
         "build": "NODE_ENV=production babel src -d dist --copy-files"
     },
     "dependencies": {
-        "@babel/polyfill": "^7.2.5",
         "@kdpw/msal-b2c-react": "^0.0.2"
     },
     "peerDependencies": {

yarn.lock

@@ -574,14 +574,6 @@
     "@babel/helper-regex" "^7.0.0"
     regexpu-core "^4.1.3"
 
-"@babel/polyfill@^7.2.5":
-  version "7.2.5"
-  resolved "https://registry.yarnpkg.com/@babel/polyfill/-/polyfill-7.2.5.tgz#6c54b964f71ad27edddc567d065e57e87ed7fa7d"
-  integrity sha512-8Y/t3MWThtMLYr0YNC/Q76tqN1w30+b0uQMeFUYauG2UGTR19zyUtFrAzT23zNtBxPp+LbE5E/nwV/q/r3y6ug==
-  dependencies:
-    core-js "^2.5.7"
-    regenerator-runtime "^0.12.0"
-
 "@babel/preset-env@^7.3.1":
   version "7.3.1"
   resolved "https://registry.yarnpkg.com/@babel/preset-env/-/preset-env-7.3.1.tgz#389e8ca6b17ae67aaf9a2111665030be923515db"
@@ -966,11 +958,6 @@ copy-descriptor@^0.1.0:
   resolved "https://registry.yarnpkg.com/copy-descriptor/-/copy-descriptor-0.1.1.tgz#676f6eb3c39997c2ee1ac3a924fd6124748f578d"
   integrity sha1-Z29us8OZl8LuGsOpJP1hJHSPV40=
 
-core-js@^2.5.7:
-  version "2.6.3"
-  resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.6.3.tgz#4b70938bdffdaf64931e66e2db158f0892289c49"
-  integrity sha512-l00tmFFZOBHtYhN4Cz7k32VM7vTn3rE2ANjQDxdEN6zmXZ/xq1jQuutnmHvMG1ZJ7xd72+TA5YpUK8wz3rWsfQ==
-
 core-util-is@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
@@ -1957,11 +1944,6 @@ regenerate@^1.4.0:
   resolved "https://registry.yarnpkg.com/regenerate/-/regenerate-1.4.0.tgz#4a856ec4b56e4077c557589cae85e7a4c8869a11"
   integrity sha512-1G6jJVDWrt0rK99kBjvEtziZNCICAuvIPkSiUFIQxVP06RCVpq3dmDo2oi6ABpYaDYaTRr67BEhL8r1wgEZZKg==
 
-regenerator-runtime@^0.12.0:
-  version "0.12.1"
-  resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.12.1.tgz#fa1a71544764c036f8c49b13a08b2594c9f8a0de"
-  integrity sha512-odxIc1/vDlo4iZcfXqRYFj0vpXFNoGdKMAUieAlFYO6m/nl5e9KR/beGf41z4a1FI+aQgtjhuaSlDxQ0hmkrHg==
-
 regenerator-transform@^0.13.3:
   version "0.13.3"
   resolved "https://registry.yarnpkg.com/regenerator-transform/-/regenerator-transform-0.13.3.tgz#264bd9ff38a8ce24b06e0636496b2c856b57bcbb"