mei: buf: drop 'running hook' debug messages.

Drop 'running hook' debug messages, as this info
can be already retrieved via ftrace.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20191004182659.2933-1-tomas.winkler@intel.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>