Are A records to NS hostnames required?

Are A records to NS hostnames required?

Among other things, I have the following in my delegated zone file (note,
domain is NOT rwasphost.com)...
; ; Zone NS records ;
@ NS dns1.rwasphost.com. dns1.rwasphost.com. A 64.222.127.135 @ NS
dns2.rwasphost.com. dns2.rwasphost.com. A 207.40.153.2
WITH the A records, Microsoft DNS server "knows" that each NS points to
the specified A... without the A records, Microsoft DNS server "figures
out" what IP each NS points to (in the SOA, under "Name Servers", if the
A's are undefined, the IP address has an asterisk indicating "* represents
an IP address retrieved as the result of a DNS query and may not represent
actual records stored on this server".)
Is there ANY reason to keep these A records? I'm trying to migrate my DNS
servers, and it seems to me that if all my zones specify NS records, and
their corresponding A records, then I'll have more A's to manage when I
migrate.
I'd much prefer to remove the A's as follows:
; ; Zone NS records ;
@ NS dns1.rwasphost.com. @ NS dns2.rwasphost.com.
Is the above still good?