Remove particle component and its associated routes and security controls.

frontend/src/app/app.routes.ts

@@ -113,8 +113,4 @@ export const routes: Routes = [
     path: 'login',
     loadComponent: () => import('./login/login.component').then(m => m.LoginDialogComponent)
   },
-  {
-    path: 'particles',
-    loadComponent: () => import('./particles/particles.component').then(m => m.ParticlesComponent)
-  },
 ];

frontend/src/app/particles/particles.component.ts

@@ -121,7 +121,6 @@ export class ParticlesComponent {
     this.matSnackBar.open('JSON file downloaded', '', {duration: 2000});
   }
 
-
   public copyJson() {
     navigator.clipboard.writeText(this.generateJson()).then(() => {
       this.matSnackBar.open('Copied to clipboard', '', {duration: 2000})