System Information
Operating system: Linux
Graphics card: GTX 1060

Blender Version
Broken: 2.80, 54ffc4e19dc4, 2019-02-25

Short description of error

In Python script, when I try to remove fcurve using bpy.types.ActionFCurves.remove

• the graph editor is correctly updated
• but the 3D scene is not updated and the animation is still there

Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file (as simple as possible).

• Open the attached file
• In the 3D View, start the animation to see the bone moving
• Run the script to remove all fcurves for the bone

Then the graph editor is updated (animation is removed) but the bone is still animated!