RESOLUTION
Enhancement Request 34202 adds an option to avoid the calculation of this table. Now it's possible to set/remove the flag "IsShowElementsInvolved" in the AttestationPolicies. If it's not set, the Helper table will not be filled for that AttestationPolicy.
This feature is planned for inclusion in Identity Manager version 8.2. It is not technically possible to provide the feature for 8.1.x.
WORKAROUND
It is possible to prevent the execution of the procedure by modifying the related procedures so that, for the specific AttestationPolicy, the HelperAttestationPolicy will not be calculated.