feat(ui): remove notebook's unused buttons

[NguyenHoangSon96]

Closes #6931

Remove two unused buttons in the Notebook screen for OSS:

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After:

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• A PR description, regardless of the triviality of this change, that communicates the value of this PR
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[bednar]

The source branch should be master; the OSS-2.7 branch is used for releases.

Removing the button should depend on the CLOUD property, because the source is shared between CLOUD and OSS. You can use something like:

ui/src/App.tsx

Line 146 in 5cfee32

{CLOUD ? (

[NguyenHoangSon96]

The source branch should be master; the OSS-2.7 branch is used for releases.

Removing the button should depend on the CLOUD property, because the source is shared between CLOUD and OSS. You can use something like:

ui/src/App.tsx

Line 146 in 5cfee32

{CLOUD ? (

Hi @bednar
I make some changes based on your request
Please check again