As others have said: you won't be able to completely uninstall the apps that came as part of the ROM - unless you are rooted.
However, you can disable them.
Settings > Application manager > All
Click the app you want to disable.
Click "Uninstall updates" (if present).
Click "Disable"
If you want to reenable the app again at any point it will be listed at the bottom of "Settings > Application manager > All" with Disabled next to it. Click it again, and then click "Enable".
HTH
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