Clearing files on EFS from Lambda after DataSync Operation from S3

After using DataSync to copy files from S3 to EFS we can see that the files have the permissions of:

-rwxr-xr-x 1 nfsnobody 65534 (when copy Ownership and copy Permissions is enabled)

or

-rw-r--r-- 1 root root (when copy Ownership and copy Permissions is disabled)

From Lambda we can see our current user is: sbx_user1051 with uid: 993, gid: 990

Because of this we're unable to delete any files copied from DataSync. Even when we change our access point, posix user we still get a permission error when trying to delete files.

Is there a better way to programmatically clear files on EFS?