Apple Final Cut Pro 7 - Manual (Page 933)

As you drag, a box displays the timecode duration of the change you’re making.
Keyframe being moved
To delete a keyframe
Do one of the following:
µ
Control-click the keyframe you want to delete, then choose Clear from the shortcut menu.
µ
Move the playhead to the position of the keyframe you want to delete, then click the
Level Keyframe or Pan Keyframe button to delete the keyframe.
µ
Place the pointer over the keyframe you want to delete. When it becomes a crosshair
pointer, drag the keyframe up or down out of the waveform display area. When the
pointer turns into a small trash can, release the mouse button.
Release the mouse
button when the pointer
becomes a trash can.
933 Chapter 57 Mixing Audio in the Timeline and Viewer