remove redundant param wait_other_notice=True from Node.start calls

remove redundant param wait_other_notice=True from Node.start calls

Since https://github.com/riptano/ccm/pull/464 ccm Node.start() defaults to:
wait_other_notice=True

Since the presence could suggest that this is a non-default value, we
clean up the code by removing it.

patch by Christopher Lambert; reviewed by Mick Semb Wever