Revert "tcp: Apply device TSO segment limit earlier"

This reverts commit d9741c07317bba9f1b567dbeefca5919f35588fe.
Revert "net: sock: validate data_len before allocating skb in sock_alloc_send_pskb()"

This reverts commit b97ef6b9e65c5c7f6dc6fe3a9bfbe951e8832093.