== Removing factory applications
{{{
 $ adb shell
 $ su
 $ mount -o rw,remount /system
 $ rm -R /system/app/application-to-be-removed
 $ rm -R /system/priv-app/application-to-be-removed
}}}

file:/system is read-only be default. use {{{mount -o rw,remount /system}}} to make it writable.