Revert "fastboot: Add DTS partition support for 'flashall' command"

This reverts commit de8c08c612a84eb0a834f5809cb4b4af7480d5da.

The FP2 build system creates a dt.img to combine it with the boot and
recovery images, not to flash it to the device directly.

Issue: FP2P-110
Change-Id: I4bb4cdc8f8decf2e5268ebec3918a034d7b842bf
1 file changed