Remove redundant scripts in package.json

The scripts 'start', 'test', and 'eject' have been removed from the package.json file. This is part of an ongoing effort to simplify the build system and reduce unnecessary dependencies. Clean-up and maintenance was performed on the 'scripts' section of package.json.

package.json

@@ -15,10 +15,7 @@
     "web-vitals": "^2.1.4"
   },
   "scripts": {
-    "start": "react-scripts start",
-    "build": "cross-env NODE_ENV=production react-scripts build",
-    "test": "react-scripts test",
-    "eject": "react-scripts eject"
+    "build": "cross-env NODE_ENV=production react-scripts build"
   },
   "eslintConfig": {
     "extends": [