Remove checks for <sys/cdefs.h> being included.

These files no longer depend on the macros required when these checks
were added.

PR:		263102 (exp-run)
Reviewed by:	brooks, imp, emaste
Differential Revision:	https://reviews.freebsd.org/D34804

sys/amd64/include/atomic.h

@@ -30,10 +30,6 @@
 #ifndef _MACHINE_ATOMIC_H_
 #define	_MACHINE_ATOMIC_H_
 
-#ifndef _SYS_CDEFS_H_
-#error this file needs sys/cdefs.h as a prerequisite
-#endif
-
 /*
  * To express interprocessor (as opposed to processor and device) memory
  * ordering constraints, use the atomic_*() functions with acquire and release

sys/amd64/include/cpufunc.h

@@ -41,10 +41,6 @@
 #ifndef _MACHINE_CPUFUNC_H_
 #define	_MACHINE_CPUFUNC_H_
 
-#ifndef _SYS_CDEFS_H_
-#error this file needs sys/cdefs.h as a prerequisite
-#endif
-
 struct region_descriptor;
 
 #define readb(va)	(*(volatile uint8_t *) (va))

sys/amd64/include/pcpu.h

@@ -31,10 +31,6 @@
 #ifndef _MACHINE_PCPU_H_
 #define	_MACHINE_PCPU_H_
 
-#ifndef _SYS_CDEFS_H_
-#error "sys/cdefs.h is a prerequisite for this file"
-#endif
-
 #include <machine/segments.h>
 #include <machine/tss.h>
 

sys/arm/include/armreg.h

@@ -43,10 +43,6 @@
 #ifndef MACHINE_ARMREG_H
 #define MACHINE_ARMREG_H
 
-#ifndef _SYS_CDEFS_H_
-#error Please include sys/cdefs.h before including machine/armreg.h
-#endif
-
 #define INSN_SIZE	4
 #define INSN_COND_MASK	0xf0000000	/* Condition mask */
 #define PSR_MODE        0x0000001f      /* mode mask */

sys/i386/include/atomic.h

@@ -30,10 +30,6 @@
 #ifndef _MACHINE_ATOMIC_H_
 #define	_MACHINE_ATOMIC_H_
 
-#ifndef _SYS_CDEFS_H_
-#error this file needs sys/cdefs.h as a prerequisite
-#endif
-
 #include <sys/atomic_common.h>
 
 #ifdef _KERNEL

sys/i386/include/cpufunc.h

@@ -40,10 +40,6 @@
 #ifndef _MACHINE_CPUFUNC_H_
 #define	_MACHINE_CPUFUNC_H_
 
-#ifndef _SYS_CDEFS_H_
-#error this file needs sys/cdefs.h as a prerequisite
-#endif
-
 struct region_descriptor;
 
 #define readb(va)	(*(volatile uint8_t *) (va))

sys/i386/include/pcpu.h

@@ -31,10 +31,6 @@
 #ifndef _MACHINE_PCPU_H_
 #define	_MACHINE_PCPU_H_
 
-#ifndef _SYS_CDEFS_H_
-#error "sys/cdefs.h is a prerequisite for this file"
-#endif
-
 #include <machine/segments.h>
 #include <machine/tss.h>
 

sys/powerpc/include/atomic.h

@@ -34,10 +34,6 @@
 #ifndef _MACHINE_ATOMIC_H_
 #define	_MACHINE_ATOMIC_H_
 
-#ifndef _SYS_CDEFS_H_
-#error this file needs sys/cdefs.h as a prerequisite
-#endif
-
 #include <sys/atomic_common.h>
 
 #ifndef __powerpc64__

sys/riscv/include/profile.h

@@ -34,10 +34,6 @@
 #ifndef _MACHINE_PROFILE_H_
 #define	_MACHINE_PROFILE_H_
 
-#if !defined(_KERNEL) && !defined(_SYS_CDEFS_H_)
-#error this file needs sys/cdefs.h as a prerequisite
-#endif
-
 #define	FUNCTION_ALIGNMENT	32
 
 typedef u_long	fptrdiff_t;

sys/sys/linker_set.h

@@ -32,10 +32,6 @@
 #ifndef _SYS_LINKER_SET_H_
 #define _SYS_LINKER_SET_H_
 
-#ifndef _SYS_CDEFS_H_
-#error this file needs sys/cdefs.h as a prerequisite
-#endif
-
 /*
  * The following macros are used to declare global sets of objects, which
  * are collected by the linker into a `linker_set' as defined below.

sys/x86/include/x86_ieeefp.h

@@ -47,10 +47,6 @@
  * XXX: {FP,SSE}*FLD and {FP,SSE}*OFF are undocumented pollution.
  */
 
-#ifndef _SYS_CDEFS_H_
-#error this file needs sys/cdefs.h as a prerequisite
-#endif
-
 /*
  * Rounding modes.
  */