SHELL

ng g c skip test

You can skip creating the tests file by adding the "--skip-tests" falg to your command.

ng g c excel --skip-tests
CREATE src/app/excel/excel.component.html (20 bytes)
CREATE src/app/excel/excel.component.ts (272 bytes)     
CREATE src/app/excel/excel.component.scss (0 bytes)     
UPDATE src/app/app.module.ts (471 bytes)

For compariosn here is the normal command without the flag

ng g c excel           
CREATE src/app/excel/excel.component.html (20 bytes)
CREATE src/app/excel/excel.component.spec.ts (592 bytes)
CREATE src/app/excel/excel.component.ts (272 bytes)     
CREATE src/app/excel/excel.component.scss (0 bytes)     
UPDATE src/app/app.module.ts (471 bytes)

ng g c skip test

ng g c "yourComponentName" --skipTest