Please tell me how t get rid of this gray circle wth a darkr ring. And then anotjer darker ring

Its a round gray circle. With a darker ring. Around it. That has another darker ring around. The other ring. And when you tap it it brongs up a side. Menu or index. At the bottom corner tjat looke loke a sun. And has. All the different. App icons i jave on phone. Revolving around it. Loke. Planets. That you tap to go to tjat app. I want this floating button to be gone. Can you. Help me. Do that

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