YOU CANNOT INSTALL EXCHANGE 2016 in coexistence with EXCHANGE 2007
That is what it is saying BRO.
You need to upgrade the exchange 2007 to exchange 2010 meaning you will have to go through 2 path migration i.e.
Migrate from exchange 2007 to exchange 2010 in coexistence setup, then
Migrate from exchange 2010 to exchange 2016.
OR you can
Setup exchange 2013 with exchange 2007 that will work, but not exchange 2016 sorry. Look at the below article for your reference.
If not possible please do a manual cleanup.