diff --git a/src/backend/port/BSD44_derived/float.h b/src/backend/port/BSD44_derived/float.h
deleted file mode 100644
index f1348bf9eaf..00000000000
--- a/src/backend/port/BSD44_derived/float.h
+++ /dev/null
@@ -1,30 +0,0 @@
-/*-------------------------------------------------------------------------
- *
- * float.h--
- *    definitions for ANSI floating point
- *
- *
- * Copyright (c) 1994, Regents of the University of California
- *
- * $Id: float.h,v 1.1.1.1 1996/07/09 06:21:42 scrappy Exp $
- *
- * NOTES
- *    These come straight out of ANSI X3.159-1989 (p.18) and
- *    would be unnecessary if SunOS 4 were ANSI-compliant.
- *
- *    This is only a partial listing because I'm lazy to type
- *    the whole thing in.
- *
- *-------------------------------------------------------------------------
- */
-#ifndef FLOAT_H
-#define FLOAT_H
-
-#define FLT_DIG	6
-#define FLT_MIN	((float) 1.17549435e-38)
-#define FLT_MAX	((float) 3.40282347e+38)
-#define DBL_DIG	15
-#define DBL_MIN	2.2250738585072014e-308
-#define DBL_MAX	1.7976931348623157e+308
-
-#endif /* FLOAT_H */