Revert "Merge branch 'PBI-6-Ray' into 'master'"

This reverts commit 0a5a7921, reversing
changes made to 980c3fbe.

package.json

@@ -6,7 +6,7 @@
     "@emotion/babel-preset-css-prop": "^10.0.27",
     "@emotion/core": "^10.0.28",
     "@emotion/styled": "^10.0.27",
-    "@material-ui/core": "^4.9.11",
+  "@material-ui/core": "^4.9.11",
     "@material-ui/icons": "^4.9.1",
     "@reach/router": "^1.3.3",
     "bootstrap": "^4.4.1",