How to remove Blender "useless" bones with "bone" parenting?

Yes, I can - First, i select my mesh in Object Mode with LMB, then I click Shift + RMB on armature. Then, I switch to pose mode and click LMB on the bone I want to parent. Then, I press Ctrl + P and select “Set Parent To [Bone]”. I did it three times with this mesh.