Removed unused c-library wrappers

Modified by Kevin Dalton (kmdalton@stanford.edu)

 On branch master
 Changes to be committed:
   (use "git reset HEAD <file>..." to unstage)

These guys are legacy bullshit; so, I nuked them {
	deleted:    infwrapper.py
	deleted:    jointwrapper.py
}

These guys imported the defunct wrappers {
	modified:   pymolsca.py
	modified:   pyscaTutorial.ipynb
} I modified them to remove the dependency

I just deleted some slop from this one {
	modified:   pinfwrapper.py
}