Leftover files from update.

[Z12LAZARUS]

I was looking around the editor and I noticed that each species and Tech tree was listed twice.

After looking through the folders, I figured that in the "Species" folder, the *.spc files were the "old" files, and in the TechTrees folder, the *.tec files were the "old" files.

I just wanted to make users aware of this, and maybe someone can confirm if what I figured was right.