I'm most certainly NOT an Obama fan, but I can't imagine anyone calling for his removal from office*. Look at who his replacement would be in that situation! As much as I dislike Obama I can't help but think that Biden would be that much worse.
*If I remember my high school civics class correctly, impeaching does not necessarily equate to removal from office. Impeachment is formally charging accused, but is separate from actual removal from office. If I remember correctly(and Wikipedia agrees on this) Bill Clinton was impeached but was not removed from office.