You remove the stock CB ball bearings by simply pulling the the stem out of the neck, and they will fall all over the workshop floor.
If you are referring to the GSXR bearings installed on the stem, the easy way is to toss the lower triple into the freezer overnight. Then tomorrow after work, pop out to the shop, a quick but careful tap with a cold chisel between the bearing race and lower tree, and it will come sliding off.