Modernize MUI styling

package.json

@@ -62,12 +62,10 @@
     "@mui/icons-material": "^6.5.0",
     "@mui/lab": "^6.0.1-beta.36",
     "@mui/material": "^6.5.0",
-    "@mui/styles": "^6.5.0",
     "@sentry/electron": "^4.0.2",
     "allotment": "^1.20.4",
     "classnames": "^2.3.2",
     "clean-stack": "3.0.1",
-    "clsx": "^1.2.1",
     "computed-async-mobx": "^4.2.0",
     "cpus": "^1.0.3",
     "d3-array": "^3.2.4",