lalframe: remove unused Aggregation code
Description
Remove unused frame aggregation code that never got beyond the prototyping staging. The only code that used these functions was removed from LALApps a few weeks ago.
API Changes and Justification
Backwards Compatible Changes
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This change introduces no API changes -
This change adds new API calls
Backwards Incompatible Changes
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This change modifies an existing API -
This change removes an existing API