Will cutting data line of USB port can supply the right amount of current it is attached to?
Barring specialty chargers such as USB-C power delivery standard or Qualcom quick charge standard, regular USB chargers are dumb. They have no idea what is connected to them. They will supply up to the rated current if the load demands. It is up to the device to detect what kind of charger it is connected to and decide whether it will pull full current out of the charger.