Removing thirdparty repositories

Hey guys,

I agree with Hauke on the LPM pull request from the thirdparty-repo. It is an interesting approach but the PR is based on ST’s standard library and therefore would need to be completely rewritten.

I think RIOT is currently missing an implementation for the RTC periph low-level driver for the STM32F4 series or have I overlooked something? Probably that should be added first anyhow before thinking about including any kind of RTC functionality in the LPM-Interface.

Best, Fabian