chore: release branches remove memsize (#146)

## Why this should be merged

A separately cherry-picked commit, the fix for `StateDB.Copy()`,
requires Go 1.23 for use of the `maps` package. This, however, breaks
`memsize`, which was later removed later from `geth` for the same
reason.

## How this works

All release branches will now cherry-pick ethereum#30253.

## How this was tested

Updated list of cherry-picks applied to #142, which [passed
tests](https://github.com/ava-labs/libevm/actions/runs/13371460014/job/37340683594).

Author: ARR4N

libevm/tooling/release/cherrypicks

@@ -11,5 +11,6 @@
 69f815f6f5791e0e48160bdad284773d0ffb1ba9 # params: print time value instead of pointer in ConfigCompatError (#29514)
 e4b8058d5a5832cdebdac7da385cf6d829c0d433 # eth/gasprice: add query limit for FeeHistory to defend DDOS attack (#29644)
 34b46a2f756da71595ac84eb7f25441f2a5b6ebb # core/state/snapshot: add a missing lock (#30001)
+e4675771eda550e7eeb63a8884816982c1980644 # internal/debug: remove memsize (#30253)
 159fb1a1db551c544978dc16a5568a4730b4abf3 # crypto: add IsOnCurve check (#31100)
 da71839a270a353bac92e3108e4b74fb0eefec29 # internal/ethapi: fix panic in debug methods (#31157)