Excluded extraneous columns in trait csv export

[nickpalladino]

Excluded csv trait export columns that were added to the traits table from our brapi work. This keeps the format the same as it was before for csv trait trt files.

[ctucker3]

Might be worth it in the future to make an array of the excluded columns that could be used to get the column count and can be used in the if exclusion statement. Works the same, but might be easier to read.

Other than that, looks good!

[nickpalladino]

Ya, agree that would be less error prone. I can do that.