Remove redundant datas from sync-store

[valamidev]

Problem / use case

I did run a minor benchmark, reference-erc20 example:

 startBlock: 13142655,
endBlock: 13151917,

Current ponder_sync table sizes after sync:

"ponder_sync"."transactions"    "15 MB"
"ponder_sync"."logs"	             "13 MB"
"ponder_sync"."blocks"	              "7320 kB"

Sum: ~35MB

After removed every data which is either duplicated, not used anywhere in the Ponder.

"ponder_sync"."logs"	               "10192 kB"
"ponder_sync"."blocks"	               "4992 kB"
"ponder_sync"."transactions"      "4400 kB"

Sum: ~20MB

Almost 50% storage reduction without any schema change or using compression simply set to default value in the sync-store/encode.ts those fields which are not in use, running Ponder at scale it is significant our Ponder infra eat ~500GB / month with 90/10 ratio between ponder_sync size / actually indexed data size.

Proposed solution

No response