[QOL] Csv column cleaning, remove 'ETH' & 'Txn count'

[brianleect]

Problem

• Column not used.
• By removing it we will have more clarity on actual changes to our labels when scraped, rather than seeing changes due to ETH change or txn count changes.

Action

• Remove all 'ETH' & 'Txn count' from existing csv
• Modify main.py to drop the relevant columns before saving

[brianleect]

Do we consider 'Market Cap' and 'Holders' information we want to leave in the csv? Seems useful somewhat but same problems with regards to clarity, we will unlikely notice changes in label