base,dev: Simplify the ListenSocket::accept method.

Remove the nodelay option which is always set to the same thing, and
simplify the logic of the method itself.

Change-Id: I78cd91f99cbaec9abddedbc7dcddc563daedb81f
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/69158
Tested-by: kokoro <noreply+kokoro@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
Reviewed-by: Yu-hsin Wang <yuhsingw@google.com>

src/base/socket.hh

@@ -104,7 +104,7 @@ class ListenSocket
     ListenSocket();
     virtual ~ListenSocket();
 
-    virtual int accept(bool nodelay = true);
+    virtual int accept();
 
     virtual bool listen(int port, bool reuse = true);