Remove anynil.NormalizeSlice

anynil.Is was already being called in all paths that
anynil.NormalizeSlice was used.

conn.go

@@ -10,7 +10,6 @@ import (
 	"strings"
 	"time"
 
-	"github.com/jackc/pgx/v5/internal/anynil"
 	"github.com/jackc/pgx/v5/internal/sanitize"
 	"github.com/jackc/pgx/v5/internal/stmtcache"
 	"github.com/jackc/pgx/v5/pgconn"
@@ -755,7 +754,6 @@ optionLoop:
 	}
 
 	c.eqb.reset()
-	anynil.NormalizeSlice(args)
 	rows := c.getRows(ctx, sql, args)
 
 	var err error

extended_query_builder.go

@@ -22,8 +22,6 @@ type ExtendedQueryBuilder struct {
 func (eqb *ExtendedQueryBuilder) Build(m *pgtype.Map, sd *pgconn.StatementDescription, args []any) error {
 	eqb.reset()
 
-	anynil.NormalizeSlice(args)
-
 	if sd == nil {
 		for i := range args {
 			err := eqb.appendParam(m, 0, pgtype.TextFormatCode, args[i])

internal/anynil/anynil.go

@@ -44,13 +44,3 @@ func Is(value any) bool {
 		return false
 	}
 }
-
-// NormalizeSlice converts all typed nils (e.g. []byte(nil)) in s into untyped nils. Other values are unmodified. s is
-// mutated in place.
-func NormalizeSlice(s []any) {
-	for i := range s {
-		if Is(s[i]) {
-			s[i] = nil
-		}
-	}
-}