No, it's definitely not harmful to have moles removed. However, the specialist must decide which mole to be removed and how.

First of all, it should be determined whether the mole is benign or malignant. For this, your mole is examined with special devices called dermatoscopes. If it is certain that it is benign, the mole can be removed surgically or with a laser. If there is a suspicion that it is malignant, your doctor may first recommend a biopsy for a definitive diagnosis. After making a definitive diagnosis with biopsy, it would be more appropriate to remove the mole. As you can see, malignant moles should also be removed. In other words, the belief that malignant moles cannot be removed among the people is not true. Of course, removing malignant moles is a much more difficult procedure. First of all, further investigations should be done. 

It's very easy to get a mole once you're sure it's a benign mole. Local anesthesia is sufficient . It can be removed surgically, that is, by cutting, or it can be removed by laser .