chore: remove react-unit-test-utils package

Author: diana-villalvazo-wgu

package-lock.json

@@ -41,7 +41,6 @@
     "@edx/frontend-lib-special-exams": "^4.0.0",
     "@edx/frontend-platform": "^8.3.1",
     "@edx/openedx-atlas": "^0.7.0",
-    "@edx/react-unit-test-utils": "^4.0.0",
     "@fortawesome/free-brands-svg-icons": "5.15.4",
     "@fortawesome/free-regular-svg-icons": "5.15.4",
     "@fortawesome/free-solid-svg-icons": "5.15.4",