I don't know of any tool which will do that for you - I would suggest that it might be best to write an application to do it outside of VS.
However, I would exercise extreme caution with the "this." removal - I know why you want to, and I agree it is both ugly and unnecessary. But... There are cases when you need it:
public int Lines { get; set;}
public MyClass(int Lines)
{
this.Lines = Lines + 10;
}
Without the "this." part the code fails to initialize the property.