doc: get rid of redundant TODO tag in FuzzedDataProvider.h (#137395)

'list.size()' is determined at runtime, so using static_assert on it as
suggested by the TODO comment is not feasible and produces the following
error when done:

error: static assertion expression is not an integral constant
expression

initially referenced in https://github.com/bitcoin/bitcoin/pull/32024

Co-authored-by: Chand-ra <chandrapratap376@gmail.com>
GitOrigin-RevId: 8cd628f4729814975656121a39417b8b4843a0a3
1 file changed