Remove the two C clips circled in red, use needle nose pliers.
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These hold on the bolts (red circles are pins you removed) and push them towards the side with the heads on them (marked with yellow).
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That assembly comes out and then you can remove the spring. Incidentally I have an extra "softer" spring if you want it (free).
It changes the pedal feel to a softer one but doing this or removing the spring won't change the engagement point.