boot-monitor: delete

ERROR: ExpansionError during parsing /build/v2013.06/sources/meta-ti/recipes-bsp/boot-monitor/boot-monitor_git.bb: Failure expanding variable SRCPV, expression was ${@bb.fetch2.get_srcrev(d)} which triggered exception FetchError: Fetcher failure: Fetch command failed with exit code 128, output:                                                                                                                  | ETA:  00:01:49
fatal: Could not read from remote repository.

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
packagegroup-ti-test: drop ltp-ddt, it doesn't build against recent kernels

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>