@Nair, Aneesh, Thanks for posting in Q&A. From the error message, the Adobe Flash Player is failed to remove. From the error message, it seems the file "FlashUtil32_30.exe" under "C:\Windows\SysWOW64\Macromed\Flash" is not existing for the version you installed.
For your issue, you can contact Adobe support to get the uninstall PowerShell command now. https://community.adobe.com/
Note: Non-Microsoft link, just for the reference.
After we get the command, try to test on one device. If it is successful, then we can consider deploying it via Intune.
Thanks for your understanding.
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