[docs][Adreno] Remove unnecessary compilation flag

[echuraev]

Flag -DUSE_MICRO=OFF was added to avoid this issue #13482. In #13503 these changes were reverted. Removed unnecessary compilation flag to avoid user confusing.

[tvm-bot]

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• cc @elvin-n _{See #10317 for details}
• Built docs for commit 6f0ed41 can be found here.

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