Correct quit statement for Temp maternal transfer

[hmorzaria]

Your commits explain the who, what, where and when of these changes. Your code shows the how. You do not need to reiterate this. This PR should complete the big picture by telling the why.

Justification

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Please describe the importance/impact of the problem and a description of how the changes in this pull request will address, resolve or improve the problem.

Beth added a quit statement in at_demography.c for when maternal transfer was on and had externally reproducing species, but the necessary code has been added and the quit statement is no longer necessary

/*   if(bm->track_contaminants && bm->flag_contamMaternalTransfer){
                        quit("Have not coded contaminant transfer for externally reproducing species - if you get this message contact teh developer group and ask them to sort this for you.... if it involves salmon Beth may swear, don't worry she will be fine after a bowl of ice cream\n");
                 } */

If it fixes a bug or resolves a feature request, be sure to link to the issue below.

Types of changes

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• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Other change (if none of the other choices apply)
  Remove quit statement that was placeholder for missing code

Further comments

If this is a New Feature, Breaking change, or a bug fix, the Atlantis Manual will need to be updated to reflect these changes.
Now would be a good time to create an issue in the Atlantis Manual repo and begin documenting your changes.

• I've created an issue
• This is NA

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[cecilieha]

No differences between this and dev simulation, as expected.