Libraries don't belong in your sketch directory.
Remove all files that aren't part of your sketch out of the sketch folder ( libraries ).
Place libraries in the libraries folder, if you have them there already, just delete all the copies you made elsewhere.
Should I use both?
#include <"OneWire.h"> ???
No that is wrong.
Do not use <> for files in your sketch directory, and do not put libraries in your sketch directory either.