This reverts commit 05f326eed9. Microsoft ADO 25355843:
05f326eed9
* add ONIE_PLATFORM_EXTRA_CMDLINE_LINUX to kernel bootparam
* Move platform-specific ONIE installer config files with rest of device-specific files * Merge contents of dell-s6000-replace-reboot.sh into s6000 installer conf file * Remove dell-s6000-replace-reboot.sh