Cygwin: drop useless method fhandler_base::has_ongoing_io

This was a remnant of the fhandler_base_overlapped class.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

winsup/cygwin/fhandler.h

@@ -491,7 +491,6 @@ public:
   bool issymlink () {return pc.issymlink ();}
   bool __reg2 device_access_denied (int);
   int __reg3 fhaccess (int flags, bool);
-  virtual bool __reg1 has_ongoing_io ()  {return false;}
 
   fhandler_base (void *) {}
 

winsup/cygwin/select.cc

@@ -591,9 +591,6 @@ pipe_data_available (int fd, fhandler_base *fh, HANDLE h, bool writing)
   FILE_PIPE_LOCAL_INFORMATION fpli = {0};
   NTSTATUS status;
 
-  if (fh->has_ongoing_io ())
-    return 0;
-
   status = NtQueryInformationFile (h, &iosb, &fpli, sizeof (fpli),
 				   FilePipeLocalInformation);
   if (!NT_SUCCESS (status))