Remove deprecated files

[IanDelMar]

that do not add to the stubs file

[szepeviktor]

Are these deprecated early enough?

wordpress-stubs/release-latest-versions.sh

Line 40 in aa2265f

6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9; do

[IanDelMar]

• wp-includes/class-http.php: 5.9.0
• wp-includes/class-smtp.php: 5.5.0
• wp-includes/class.wp-dependencies.php: 6.1.0
• wp-includes/class.wp-scripts.php: 6.1.0
• wp-includes/class.wp-styles.php: 6.1.0