I have set my UIToolBar tint color to some value, and there is this border line that I see in which I want to remove:
Correct answer is the one by totalitarian...FYI. https://stackoverflow.com/a/14448645/627299
My response is still below for reference.
Here's what I did with my WHITE background toolbar...
whiteToolBar.layer.borderWidth = 1;
whiteToolBar.layer.borderColor = [[UIColor whiteColor] CGColor];
Perhaps you could do the same thing with your color instead.