Draft: Removals for v2

[fabianfett]

This is a quick and dirty draft of the removals that we want to do for v2. Happy to split this into smaller prs (see commits).

[codecov-commenter]

Codecov Report

Attention: 40 lines in your changes are missing coverage. Please review.

Comparison is base (69ccfdf) 62.28% compared to head (ce3fee6) 72.71%.

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #445       +/-   ##
===========================================
+ Coverage   62.28%   72.71%   +10.43%     
===========================================
  Files         124       74       -50     
  Lines        9937     8319     -1618     
===========================================
- Hits         6189     6049      -140     
+ Misses       3748     2270     -1478     

Files	Coverage Δ
.../Connection/PostgresConnection+Configuration.swift	50.00% <ø> (ø)
Sources/PostgresNIO/Data/PostgresDataType.swift	55.94% <ø> (-0.26%)	⬇️
Sources/PostgresNIO/Data/PostgresNumeric.swift	78.60% <ø> (ø)
Sources/PostgresNIO/Data/PostgresRow.swift	70.27% <ø> (+21.82%)	⬆️
...tion State Machine/ExtendedQueryStateMachine.swift	79.59% <100.00%> (ø)
... State Machine/PreparedStatementStateMachine.swift	91.83% <100.00%> (ø)
Sources/PostgresNIO/New/PSQLEventsHandler.swift	72.41% <ø> (ø)
Sources/PostgresNIO/New/PSQLTask.swift	78.12% <100.00%> (ø)
Sources/PostgresNIO/New/PostgresQuery.swift	82.44% <ø> (+1.14%)	⬆️
Sources/PostgresNIO/Utilities/NIOUtils.swift	0.00% <ø> (ø)
... and 11 more

... and 4 files with indirect coverage changes