The idiom "out of the way" has several meanings: ^{thefreedictionary.com}+1 ^{1 2}

• Not convenient for or easily reached by someone; not along someone's route.
• Not obstructing, hindering, or interfering.
• Taken care of, disposed of.
• In a remote location.

In the context of "get out of the way", it means to stop obstructing or impeding someone; to move out of someone's path. ^{thefreedictionary.com}+1 ^{3 4}