As I said, typically NO interior walls are load bearing, but some homes they are/can be. Without being there I will not guarentee that it is/is not.
I am pretty certain that it is not a load bearing, oppen it up (remove wallboard) from one side of the wall and see what you have there.
Keep in mind as you remove this wall that generally your wiring going to and from outlets/switches and over head lights usually drop from the ceiling oppose to in the wall as stick built homes are.
I will leave you a link to how mobile homes are built/constructed.