Haiku: remove support for accept4 for now

Author: korli

src/internal/poll/hook_cloexec.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build dragonfly || freebsd || haiku || linux || netbsd || openbsd || solaris
+//go:build dragonfly || freebsd || linux || netbsd || openbsd || solaris
 
 package poll
 

src/internal/poll/sock_cloexec.go

@@ -5,7 +5,7 @@
 // This file implements accept for platforms that provide a fast path for
 // setting SetNonblock and CloseOnExec.
 
-//go:build dragonfly || freebsd || haiku || linux || netbsd || openbsd
+//go:build dragonfly || freebsd || linux || netbsd || openbsd
 
 package poll
 

src/internal/poll/sys_cloexec.go

@@ -5,7 +5,7 @@
 // This file implements accept for platforms that do not provide a fast path for
 // setting SetNonblock and CloseOnExec.
 
-//go:build aix || darwin || (js && wasm) || wasip1
+//go:build aix || darwin || haiku || (js && wasm) || wasip1
 
 package poll
 

src/net/internal/socktest/sys_cloexec.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build dragonfly || freebsd || haiku || linux || netbsd || openbsd || solaris
+//go:build dragonfly || freebsd || linux || netbsd || openbsd || solaris
 
 package socktest
 

src/net/main_cloexec_test.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build dragonfly || freebsd || haiku || linux || netbsd || openbsd || solaris
+//go:build dragonfly || freebsd || linux || netbsd || openbsd || solaris
 
 package net
 

src/syscall/syscall_haiku.go

@@ -77,26 +77,6 @@ func Pipe(p []int) (err error) {
 	return
 }
 
-//sys   accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) = libnetwork.accept4
-
-func Accept4(fd int, flags int) (int, Sockaddr, error) {
-	var rsa RawSockaddrAny
-	var addrlen _Socklen = SizeofSockaddrAny
-	nfd, err := accept4(fd, &rsa, &addrlen, flags)
-	if err != nil {
-		return 0, nil, err
-	}
-	if addrlen > SizeofSockaddrAny {
-		panic("RawSockaddrAny too small")
-	}
-	sa, err := anyToSockaddr(&rsa)
-	if err != nil {
-		Close(nfd)
-		return 0, nil, err
-	}
-	return nfd, sa, nil
-}
-
 func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, _Socklen, error) {
 	if sa.Port < 0 || sa.Port > 0xFFFF {
 		return nil, 0, EINVAL