Revert fix applied on the wrong branch (lp_temp_sensors)

Revert "Added null check for count in _lp_temp_sensors() to stop division by zero errors in case count is still zero."
Closes #214.
Thanks @jaesivsm

This reverts commit 9d96a82c807149c7077baa546e18e9dadb7e7c37.

Conflicts:
	liquidprompt