docs: removing http-server section in Service worker tour (#47613)
docs: removing http-server section in Service worker tour (#47613)

- Based on issue #47583
- Updated docs for Service workers by removing the section which used http-server to use service workers with ng serve
- By changelog of v14.2.0, service workers become compatible with ng serve using feature #23679

PR Close #47613

gnomeontherun/angular,gnomeontherun/angular,gnomeontherun/angular,angular/angular,angular/angular,gnomeontherun/angular,angular-indonesia/angular,angular/angular,angular-indonesia/angular,angular-indonesia/angular,angular-indonesia/angular,angular/angular