Remove FileUnlink(), which wasn't being used anywhere and interacted poorly

with the recent patch to log temp file sizes at removal time.  Doesn't seem
worth fixing since it's unused.
In passing, make a few elog messages conform to the message style guide.

src/backend/storage/file/fd.c

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/storage/file/fd.c,v 1.139 2007/06/07 19:19:57 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/storage/file/fd.c,v 1.140 2007/07/26 15:15:18 tgl Exp $
  *
  * NOTES:
  *
@@ -549,8 +549,7 @@ LruDelete(File file)
 
 	/* close the file */
 	if (close(vfdP->fd))
-		elog(ERROR, "failed to close \"%s\": %m",
-			 vfdP->fileName);
+		elog(ERROR, "could not close file \"%s\": %m", vfdP->fileName);
 
 	--nfile;
 	vfdP->fd = VFD_CLOSED;
@@ -985,8 +984,7 @@ FileClose(File file)
 
 		/* close the file */
 		if (close(vfdP->fd))
-			elog(ERROR, "failed to close \"%s\": %m",
-				 vfdP->fileName);
+			elog(ERROR, "could not close file \"%s\": %m", vfdP->fileName);
 
 		--nfile;
 		vfdP->fd = VFD_CLOSED;
@@ -1005,15 +1003,15 @@ FileClose(File file)
 			{
 				if (filestats.st_size >= log_temp_files)
 					ereport(LOG,
-						(errmsg("temp file: path \"%s\" size %lu",
-						 vfdP->fileName, (unsigned long)filestats.st_size)));
+							(errmsg("temp file: path \"%s\" size %lu",
+									vfdP->fileName,
+									(unsigned long) filestats.st_size)));
 			}
 			else
-				elog(LOG, "Could not stat \"%s\": %m", vfdP->fileName);
+				elog(LOG, "could not stat file \"%s\": %m", vfdP->fileName);
 		}
 		if (unlink(vfdP->fileName))
-			elog(LOG, "failed to unlink \"%s\": %m",
-				 vfdP->fileName);
+			elog(LOG, "could not unlink file \"%s\": %m", vfdP->fileName);
 	}
 
 	/*
@@ -1022,23 +1020,6 @@ FileClose(File file)
 	FreeVfd(file);
 }
 
-/*
- * close a file and forcibly delete the underlying Unix file
- */
-void
-FileUnlink(File file)
-{
-	Assert(FileIsValid(file));
-
-	DO_DB(elog(LOG, "FileUnlink: %d (%s)",
-			   file, VfdCache[file].fileName));
-
-	/* force FileClose to delete it */
-	VfdCache[file].fdstate |= FD_TEMPORARY;
-
-	FileClose(file);
-}
-
 int
 FileRead(File file, char *buffer, int amount)
 {

src/include/storage/fd.h

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/storage/fd.h,v 1.59 2007/06/07 19:19:57 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/storage/fd.h,v 1.60 2007/07/26 15:15:18 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -62,7 +62,6 @@ extern int	max_files_per_process;
 extern File PathNameOpenFile(FileName fileName, int fileFlags, int fileMode);
 extern File OpenTemporaryFile(bool interXact);
 extern void FileClose(File file);
-extern void FileUnlink(File file);
 extern int	FileRead(File file, char *buffer, int amount);
 extern int	FileWrite(File file, char *buffer, int amount);
 extern int	FileSync(File file);