Revert "miner: limit block size to eth protocol msg size (#2696)"

[buddh0]

This reverts commit a28262b.

Description

Revert "miner: limit block size to eth protocol msg size (#2696)"

Rationale

Two Changes Recently:

1. EIP-7623 Implementation
   Increased the gas cost of zero bytes from 4 to 10 gas, following EIP-7623.

2. Gas Limit Reduction:
   The BSC gas limit is reduced from 140M to 35M.

Estimating the Maximum BSC Block Size

With the increased zero byte cost and reduced block gas limit, the maximum block size is significantly reduced, even without enforcing an explicit size cap.

• A simple transfer transaction (21,000 gas base) with payload fully filled with zero bytes (~128KB) now costs:
  21000 + (128*1024 - 110)*10 = 1,330,620 gas ≈ 1.33M
• Therefore, a 35M gas block can include at most:
  35M / 1.33M ≈ 26.3 ≈ 27 transactions
• Additionally, up to 6 blobs can be included in a block.
• So the maximum theoretical block size is:
  (27 + 6) * 128KB = 4.125MB

Conclusion

With this configuration, the maximum block size is now ~4.1MB, well below the previous soft cap of 10MB.
As a result, we no longer need to enforce the 10MB block size limit.

Example

add an example CLI or API response...

Changes

Notable changes:

• add each change in a bullet point here
• ...